1 T 1 Wbrn2
A second consideration for the selection of peak flux density is the possibility of core saturation under transient loading conditions at maximum input voltage. FIG. 2.12.3 Hysteresis and eddy-current loss in a pair of FX 3730 cores as a function of total flux at 100 C, with frequency as a parameter. Courtesy of Mallard Lid. FIG. 2.12.3 Hysteresis and eddy-current loss in a pair of FX 3730 cores as a function of total flux at 100 C, with frequency as a parameter. Courtesy of Mallard Lid.
Main airgap flux and leakage flux
Broadly speaking the motor designer shapes the stator and rotor teeth to encourage as much as possible of the flux produced by the stator to pass Figure 5.7 Resultant air-gap flux density wave produced by a complete 3-phase, 4-pole winding at three successive instants in time Figure 5.7 Resultant air-gap flux density wave produced by a complete 3-phase, 4-pole winding at three successive instants in time right down the rotor teeth, so that before completing its path back to the stator it is...
Switch Film Sheet
Changed to 22663115. Sound Names on TONE SELECTOR buttons are deleted. X-f f ' 7 V F lt 0 F - y -fc V F ft fetf t Music Rest is furnished on later products. Effective Serial Number is not fixed on the day of the issue.
Dsch3 1
File this supplement with the service manual. US Model Canadian Model AEP Model UK Model E Model Australian Model Hong Kong Model Chinese Model Korea Model Argentine Model Brazilian Model Japanese Model Tourist Model Change of Board's Suffix No. Note Please refer to Ver. 1.2 of SERVICE MANUAL 9-852-211-31 for the revision of accessories. Suffix No. of JK-348 flexible board has been changed from TT into T2 About suffix No. TT and T2 , there are no change of schematic diagram and printed wiring...
1027 SoftStart Techniques
Some applications need the input current to be controlled, to prevent high current spikes when power is first applied. This could be to reduce damage to switch contacts by the risk of sparking. Clearly the inrush techniques just described could be used, but sometimes it is necessary to control the output power instead. For example, a circuit for driving one or two power LEDs from the AC mains could use a double-buck topology. But typical applications for this circuit are inside lamp housings,...
Noise blanker NB circuit
The input of the NB circuit is extracted from the outputs of second-stage RX mix FETs Q13 and Q14 2SK520 K44 and is applied to the NB hybrid IC1 KCX01 . The input signal is amplified and detected by IC1 then output as a noise blanking signal. The operation of IF amplifier Q15 3SK13KM is stopped by NB switching transistor Q16. Noise components are then eliminated. NB1 is used for short-duration pulses such as ignition noise. NB7 is used for longer-duration, long duration pulse noise such as the...
n Polarized GlassOutPrePolarized Glass removal
1 Remove 4 screws A M2.5x4 and take the LCD Prism ass'y off upward from the optical unit. 2 Remove each screw B and take the glass off upward. Do not replace the LCD panel separately otherwise it can not obtain proper picture.
Jp4 Adjustment
The last page of this ADJUSTMENT has a foldout which shows location of test points. Numbers in circle on the figures in this adjustment refer to trimmer potentiometers used for adjusting, whose designations are independent of those on circuit diagrams and PCB layouts. In some PCBs, exact trimmer location may differ from representaion shown below. Some PCBs have fewer preset potentiometers. CAUTION - Pour Trimmers, CONTROL BOARD G - Always set these trimmers at midpoint before starting...
Basic Controls Settings
Trimmer 31 P- INV of Module Board 052-314E later version,S N xx4100- All midpoint. These settings allow each adjustment step to be made with minimum reset. CONTROL BOARD-G 052-236 all pots at midpoint CONTROL BOARD-G 052-236 all pots at midpoint 1. DC VOLTAGE 15 Volt power supply board
Parts Lists
The following tables list the replaceable parts for the 268XA devices. PCAs may be subject to damage by static discharge. Table 7-1. 2680A Final Assembly Parts List Table 7-1. 2680A Final Assembly Parts List HOLDER,HLDR,FUSE,1 4 X 1-1 4,LOPROFILE,PNLMT 2680A-4004 PCA, SYSTEM POWER AND CONTROLLER 5500A-4417,WIRE, BINDING POST TO FASTON LC1 LINE CORD,NORTH AM,10A,5-15 IEC,18 3,SVT,7.5 FT MNO2,3.0V,0.560AH,CR2450,COIN,PC PINS,24X5MM,BULK CABLE ASSEMBLY,FLAT,20 COND,MICRO MODUL RECEPT,FERRITE,12...
Type St
Note 1 Don't use the 12 pin flexible board of CPC-9 jig. It causes damage to the unit. Note 2 The old CPC-9 jig Parts code J-6082-393-B cannot be used, because it cannot operate the adjustment remote commander. Description on Self-diagnosis Display The camera has a self-diagnosis display. This function displays the camera condition with five-digits a combination of a letter and figures on the LCD screen. If this occurs check the following code chart. The five-digits display informs you of the...
Graphical interpretation via phasor diagram
We will look at the current phasor diagram as the slip is varied, for two motors, both having the same leakage reactance, XT. One motor will be representative of the 'low-resistance' end of the scale R2 0.1 XT while the other will represent the 'high-resistance' end R2 XT . As before, the voltage and frequency are constant throughout. The reason for choosing total leakage reactance as the common factor linking the two motors is simply that the current loci see below are then very similar, and...
Ma9006
The storage circuit, located on the storage unit, supplies voltage levels and timing pulses to control the storage part of the C.R.T. in the SAVE, READ, ERASE and WRITE modes and in the positions PERSISTENCE and MAX. WRITE. The storage circuit will be discussed with the aid of the simplified diagram of this circuit as shown in Fig. 3.12. The schematic of this circuit is on the diagram Fig. 3.51. at the rear of the manual. The WRITE mode is operative after depressing push-button SK25. Assume...
75 Conclusions
The boost-buck is an ideal topology where the LED load voltage can be higher or lower than the supply voltage. It should also be used when the supply voltage is no more than 20 difference worst case from the LED load voltage. So if the LED voltage maximum is 20 V and the supply voltage minimum is 23 V, the difference is 3 V, and 3 20 0.15 or 15 , so a Cuk or SEPIC should be used. If the supply voltage is more than 20 higher, use a buck topology. If the supply voltage is more than 20 lower, use...
613 Example Of Rectifier Capacitor Input Filter Dc Output Voltage Calculation
Consider the previous example for a 250-W unit. The input power is 357 ind a voltage doubler circuit is to be used at 110 V input. The total series re - ce S . UtpUt V0ltaBe 0f a ful -wave bridge-rectified capacitor input filter as a function of greater 6 S0UrCC res,stance as a P meter. Valid for capacitor values of 1.5 VV or FIG. 1.6.8 Mean DC output voltage of a voltage doubler capacitor input filter as a function of load power, with effective source resistance as a parameter. Valid for...
84 Final Assembly Parts
See Table 8-1 and Figure 8-1 for the Final Assembly parts. Top case assembly Fluke 192B, 196B, 196C, 199B, 199C without Keypad set includes large amp small keypad Display unit B W Fluke 192B, 196B, 199B The Display unit does not include the flat cable Flat cable for display unit both versions Unit is provided with sticker 190B C see note 1 below On delivery the Fluke 199C testsoftware is loaded Load appropriate software and type number, then See Section 10.4 for more information. Bottom case...
127 Snubber Components Halfbridge
Components C3, C4, and Rl are often referred to as snubber components they assist the turn-off action of the high-voltage transistors Q1 and Q2 so as to reduce secondary breakdown stress. As the transistors turn off, the transformer inductance maintains a current flow, and the snubber components provide an alternative path for this current preventing excessive voltage stress during the turn-off action. The conventional diode, capacitor, snubber circuit should not be used in the half-bridge...
LinkELECTRICAL PARTS LIST [ accessories
-XX, -X mean standardized parts, so they may have some differences from the original one. Items marked are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. The mechanical parts with no reference number in the exploded views are not supplied. Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. All resistors are in ohms. METAL...
Proximity Effect Further Increases Winding Losses
Proximity effect - losses due to eddy current generated by the magnetic field experienced by a particular conductor section but generated by the current flowing in the rest of the winding. Design methods for minimizing proximity effect losses discussed later. Pw Pdc Pec Pec eddy current loss. Pw Rdc Rec Irms Rac Irms Rac FR Rdc 1 Rec Rdc Rdc Minimum winding loss at optimum conductor size. High frequencies require small conductor sizes minimize loss. Pdc kept small by putting may small-size...
Schematic Diagram
Notes 1 AM capacitance values are indicated in uF lt p - 10pF . 2 All resistance values are indicated in ohms k 10 ohm, M lO'ohml 3 Large letter R represents a resistor's reference number e.g R19 Registor number 19 4 Refer to pages 14 15 for T waveforms and page 17 for their vestpomts, 15 Wire color code R - red, W - white. BL - blue
Power Supply
Your QY10 Music Sequencer will run either from batteries or an AC adapter both sold separately. Follow the instructions below according to the power source you intend to use. Six 1.5V AA size SUM-3 or R6P or equivalent alkaline batteries sold separately must first be installed in the battery compartment. 1. Open the battery compartment cover located on the instrument's bottom panel by sliding it in the direction of the arrow. 2. Insert the six batteries, being careful to follow the polarity...
20 Handlebracket Handleshaft Handlespeakerspeaker Holder Filter Sfilter R
1 Remove the two screws T , and take out the two 3 Remove the one screw 2 , and take out the BRACKET HANDLE . SPEAKER HOLDER and the SPEAKER. 2 Remove the two SHAFT HANDLE , and then take out the HANDLE.
51 Introduction
5-2. This section contains an illustrated parts breakdown of the instrument. A similar parts listing for each of the Options will be found in Section 6. Components are listed alphanumerically by assembly. Both electrical and mechanical components are listed by reference designation. Each listed part is shown in an accompanying illustration. 5-3. Parts lists include the following information 4. Federal Supply Code for Manufacturers. See Table 5-6 for Code-to-Name list. 5. Manufacturer's Part...
1433 The Weighted Resistor DA Converter
This type of converter is very similar to the Resistor Ladder D A converter. In this case, however, each resistor in the string is given a value proportional to the binary value of the bit it represents. Currents are then summed from each active bit to achieve the output Figure 14-2 . Figure 14 2. Binary Weighted D A Converter Figure 14 2. Binary Weighted D A Converter The number of resistors and switches reduced to one per bit, but the range of the resistors is extremely wide for...
76 Lead Compensation
Figure 7-13. Lead-Compensation Circuit transfer function The equation for the inverting op amp closed-loop gain is repeated below. Figure 7-14. Lead-Compensation Bode Plot When a approaches infinity, Equation 7-13 reduces to Equation 7-14. Substituting RF C for ZF and RG for ZG in Equation 7-14 yields Equation 7-15, which is the ideal closed-loop gain equation for the lead compensation circuit. The forward gain for the inverting amplifier is given by Equation 7-16. Compare Equation 7-13 with...
57 Snubber Components
Because power FET devices are not subject to the same secondary breakdown mechanisms that occur with bipolar devices, from a reliability standpoint, it is often considered that snubber components are not essential. However, in most FET applications, a small RC snubber network will still be fitted across the FETs to reduce RF radiation and meet the dv df limitations of the FET. With very high dvldt, some power FETs display a failure mode resulting from conduction of the internal parasitic...
1 Outline software descriptions
This is the PC control software for servicing adjustments to be conducted during the replacement of the MAIN PWB, LCEP PWB, VIDEO-DEC PWB, or the LCD panel for the LCD projector, the VT440 VT540 Series. This software is used for the adjustment of Sub-Brightness Sub-Contrast, Flicker, and Ghost, and also the modification of Lamp Usage Time, Filter Usage Time, Panel Usage Time, Projector Usage Time, and Language Selection. In addition, it enables reading and writing of various data, such as the...
Module Replacement 1
Only supplied components IC9602-03, Q9604-11, Q9614, D9601, D9604-09, D9611-12, D9616-29, _R9601, R9630-34, R9636-40, R9653, C9603, C9610, C9617-19, T9604, SW9601, S9602, TXJ L2VKB9
135 AntiAliasing Filters
Spurious effects in the receiver channel Figure 13-1 appear as high frequency noise in the baseband signal present at the ADC. The spurious signals gt 2 must be blocked from getting to the ADC sampling at Nyquist rate, s where they will cause aliasing errors in the ADC output. A suitable anti-aliasing low-pass analog filter placed immediately before the ADC can block all frequency components capable of causing aliasing from reaching the ADC. The anti-aliasing filter cutoff frequency fc is set...
Assemblydissassembly
NOTE These two screws MUST be replaced n the correct places. SECTION 2 CIRCUIT DESCRIPTIONS Board A-1 Each key on the keyboard has its own capacitor-resistor-diode network. The capacitors are normally charged to 15 volts until a key is depressed at which time the capacitor discharges through the diode creating a trigger pulse on the trigger bus rod. Q1 through Q4 are a monostable multivibrator which delays the trigger pulses 15 milliseconds to allow the gate and CV to stabilize. P1, the pitch...
721 Replacement of PBS Array Analysis Block
1. Remove the analysis case upper according to the steps 1 through 3 in the section 7.18. Replacement of Incidence Polarizer R and B . 3. Install new PBS array. Note Be careful not to mistake the direction inside and outside, upper and lower . Be careful not to touch the surface of PBS array.
Pin Function of Percussion Generator
The terminal holds LOW level at power switch on for initializing the internal circuit The LSI reads the percussion data from the CPU when the terminal is LOW level. Chip select signal input. Fixed at LOW level. Ground 0V source for internal digital circuit 5V source for internal digital circuit CPU outputs four each of pitch and envelope signals. Normally all the signals are for melody sounds however, when the demonstration music is played, each pitch and envelope signals become obbligato,...
The INTCON register
This register controls the processing of interrupts. The bits of interest are lt 7 gt GIE 1 interrupts enabled, 0 interrupts disabled. This bit is used to switch all interrupts on or off with a single command. lt 6 gt PEIE 1 enable peripheral interrupts, 0 disable these interrupts. lt 5 gt TOIE 1 enable timer TR0 overflow interrupts, 0 disable. lt 4 gt INT 1 enable INT interrupt, 0 disable. The INT interrupt is an external interrupt occurring when RA2 changes. The direction of change that...
The Controls Connectors
Slide to the ON position to turn the power on. Always turn the POWER switch OFF when the QY10 is not in use to prevent unnecessary wear on the batteries. The DC output cable from an optional Yamaha PA-IB or PA-3 AC Adapter can be connected here to power the QY10 when the batteries are depleted, or simply to reduce wear on the batteries when an AC outlet is handy. When the AC Adapter is used the batteries are automatically disconnected. In addition to allowing input from an external MIDI...
XAxis Amplifier
In all positions of the TIME DIV switches except X-Y, the input signal to the base of Q1224 will be the sawtooth waveforms from the sweep generators. In the X-Y mode however, the sweeps are disabled and the signal applied to Q1224 comes from the Channel 1 Preamp via the X-Axis Amplifier stage. This stage includes Q1214, Q1218, and their associated circuitry. Fig. 3-7. Detailed block diagram of the Horizontal Amplifier. Fig. 3-7. Detailed block diagram of the Horizontal Amplifier. Q1214 is...
Connection Pin Assignments
COMPUTER-RGB COMPONENT INPUT1, 2 and COMPUTER-RGB COMPONENT OUTPUT Terminals Video input green sync on green Video input blue Not connected Not connected Earth red Earth green sync on green Earth blue Not connected GND Not connected Bi-directional data Horizontal sync signal TTL level Vertical sync signal TTL level Data clock PB CB Not connected Not connected Earth PR Earth Y Earth PB Not connected Not connected Not connected Not connected Not connected Not connected Not connected...
D imiiiuiiiiiuiiuiuijjiijjil
Skip cycle is not allowed during the PFC startup phase to avoid that it interferes with the soft-start. That is why, skip cycle is enabled only when pfcOK is high. Each working phase of the burst mode starts smoothly as Pin 3 is grounded at the beginning of it. This soft-start capability is effective to avoid the audible noise that could possibly result from such a burst operation. The circuit leaves the standby mode when the output voltage goes below 95.5 of its regulation level and VPin1 is...
Description Of Schematic Diagram
1. Voltages at test points are measured at the supply voltage of AC 220V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm V tester. 1. Waveforms at test points are observed at the supply voltage of AC 220V. Signals are fed by a color bar signal generator for servicing purpose. INDICATION OF RESISTOR amp CAPACITOR RESISTOR 1. The unit of resistance Q is omitted. K kQ 1000 Q, M MQ . 2. All resistors are 5 , unless otherwise...
3 Block Diagrams
3-1. OVERALL BLOCK DIAGRAM 1 2 Number in parenthesis indicates the division number of schematic diagram where the component is located. AUDIO SIGNAL VIDEO SIGNAL VIDEO AUDIO SIGNAL AUDIO SIGNAL VIDEO SIGNAL VIDEO AUDIO SIGNAL Number in parenthesis indicates the division number of schematic diagram where the component is located. Number in parenthesis indicates the division number of schematic diagram where the component is located. 3-3. POWER BLOCK DIAGRAM 1 2 Number in parenthesis indicates...
Installation Instructions 1
This radiotelephone requires a maximum of 30 A at 13.6VDC 15 when transmitting at full power. Do not exceed the length of the supplied power cable. Supplied DC cable To vessel's battery Supplied DC cable To vessel's battery Wing bolt To Antenna Ground yt terminal Wing bolt To Antenna Ground yt terminal Supplied External Speaker plug To External speaker The type of antenna that is used will greatly affect the performance of the equipment. Use a properly adjusted antenna, of good quality, to...
31 Ideal Op Amp Assumptions
The name Ideal Op Amp is applied to this and similar analysis because the salient parameters of the op amp are assumed to be perfect. There is no such thing as an ideal op amp, but present day op amps come so close to ideal that Ideal Op Amp analysis approaches actual analysis. Op amps depart from the ideal in two ways. First, dc parameters such as input offset voltage are large enough to cause departure from the ideal. The ideal assumes that input offset voltage is zero. Second, ac parameters...
List of Figures
2-1 .Max. Input Voltage vs. 2-2. Safe Handling Max. Input Voltage Between Scope References, Between Scope References and Meter Reference, and between Scope References Meter Reference and earth 2-3. Max Voltage from Probe Tip to Ground and from Probe Tip to Probe Reference 2-17 3-1. Fluke190B-C Block 3-2. Fluke 190B-C Start-up Sequence, Operating 3-3. C-ASIC OQ0260 Block 3-4. LF Floating to 3-5. C-ASIC Control 3-6. Meter Ext Channel Block 3-7. S-ASIC signal section block 3-8. S-ASIC Input 3-9....
904a Voltage Controlled Lowpass Filter Test Procedure
l.Set wirewound trimpots R17 and R25 to mid-position. 2. Set FIXED CONTROL VOLTAGE to 6, FREQUENCY RANGE to 2 and REGENERATION to 0. 3. Using a dc voltmeter, check the voltages at R35 and R39. Both levels will be approximately 1.0 volts. Adjust R40 zero trimpot on filter board lor approximately the same voltage at R35 and R39. 4. Connect DC VOLTMETER across R23 470 ohms and adjust 2.0 volt LEVEL trimpot R24 for 2.0 volts. Disconnect DC VOLTMETER after adjusting. 5. Apply a 20kHz Odb sinewave to...
Circuit Description Udt
The MAT-100 is a high-frequency band automatic antenna tuner that can be remotely controlled. When tuning with a remote controller, the TS terminal of the control cable goes low and a tuning start signal is sent. When the MAT-100 detects that the TS terminal is low, the CPU is reset in order to start tuning. A tuning signal is sent from the remote controller to the sensor circuit of the MAT-100. The sensor circuit detects the frequency count, forward voltage, reflected voltage, impedance, and...
213 Anschluss An Eine Externe Gleichspannungsquelle
Das Ger t kann an eine externe Gleichspannung von 22 bis 30 V angeschlossen werden die Stromaufnahme betr gt 1,25 A. Diese Spannung ist an Buchse BU8 EXT. D.C. SUPPLY anzuschliessen. DER PLUSPOL DER SPANNUNG IST MIT ERDE ZU VERBINDEN WIE ES IN DEM SCHALTBILD AN DER HINTEREN TEXTPLATTE ZU SEHEN IST, DA DER PLUSPOL DER STROMVERSORGUNG MIT DEM CHASSIS VERBUNDEN IST. Bei einer falschen Polung der Spannungsquelle wird der Oszillograf nicht besch digt. Beim Betrieb an einer externen Gleichspannung...
B[ CMBCe 1513
REFERENCE AND MODULA T ON OSC LLA TOR WA VESHAPE AND KEYBOARD CONTROL PRINTED CIRCUIT BOARD ASSEMBL Y 1. CONNECTOR VOLTAGES MUST BE READ WITH CONNECTORS REMOVED FROM RESPECTIVE BOARD. 2. FOR PRESET 2 STRINGS, READINGS MUST BE TAKEN WITH A KEY DEPRESSED. 3. VOLTAGES ARE FOR INSTRUMENTS ABOVE S N 3000. 4. REPLACEMENT OF INTEGRATED CIRCUITS A2, A4, A7, A9, A13, A14 OR A15 REQUIRES REALIGNMENT. i n5 ii p86 i,, p85 i fr55l FIXED AND VARIABLE RESONANT FIL TERS PRINTED CIRCUIT BOARD ASSEMBL Y 1. REFER...
Third Cascode Amplifier
Q132 and Q134, in conjunction with Q304 and Q308 in the Vertical Switching Circuit, form the Third Cascode Amplifier stage. Thermistor RT131 between the emitters of Q132 and Q134 changes in value with changes in temperature. This varies the gain of the Third Cascode Amplifier stage to compensate for changes in total amplifier gain that occur with variations in operating temperature. The push-pull signals picked off in the emitters of Q132 and Q134 are converted to a single-ended signal by Q142...
Link 1
3-1. OVERALL BLOCK DIAGRAM 1 2 Number in parenthesis indicates the division number of schematic diagram where the component is located. LENS BLOCK VIDEO SIGNAL AUDIO SIGNAL VIDEO AUDIO SIGNAL VIDEO SIGNAL AUDIO SIGNAL VIDEO AUDIO SIGNAL BT001 ' LITHIUM j BATTERY FLASH V9, CONTROL, 6 CHARGE CONTROL CAM_13V CAM_-7.5V M_5.0V CAM_3.5V USB_3.1V D_3.0V A_3.0V DDR_1.8V D_1.8V D_1.5V D_1.2V BL_H EVER MS_VCC 4. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
EMI Filter Design
Nearly all power circuits contain an input electromagnetic interference EMI filter. The main purpose of the EMI filter is to limit the interference that is conducted or radiated from the power circuit. Excessive conducted or radiated interference can cause erratic behavior in other systems that are in close proximity of, or that share an input source with, the power circuit. If this interference affects the power circuit, it can cause erratic operation, excessive ripple, or degraded regulation,...