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Index 49

Single precision function generator ICL8038 application circuit (b)

Published:2011/7/18 6:06:00 Author:John | Keyword: Single precision function generator, application circuit

Single precision function generator ICL8038 application circuit (b)
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Single precision function generator ICL8038 application circuit (c)

Published:2011/7/18 6:07:00 Author:John | Keyword: Single precision function generator, application circuit

Single precision function generator ICL8038 application circuit (c)

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NE566V generated sawtooth circuit

Published:2011/7/18 19:27:00 Author:John | Keyword: sawtooth, NE566V

NE566V generated sawtooth circuit
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Servo position remote control circuit

Published:2011/7/12 10:28:00 Author:John | Keyword: remote control, Servo

Servo position remote control circuit is shown. The system includes three components, which are named the square wave generator, servo amplifier and servo. Appropriate square wave is added to input end of the amplifier through wires. The position’s regulation potentiometer of the square wave generator can decide the servo motor’s position. (View)

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three-phase motor phase-shifting starter

Published:2011/7/15 21:05:00 Author:chopper | Keyword: phase-shifting starter

Three-phase AC motor usually requires to install phase-shifting capacitor to start when it uses 220V voltage.As for the three-phase AC motor whose power is 2-3KW,it needs the phase-shifting capacitor whose capacity is over 2OOμF,and the capacitor size is bigger,the price is higher.This example describes the three-phase motor phase-shifting starter,which can replace the phase-shifting capacitor,and make the three-phase AC motor in 220V AC supply voltage easier to start, and more reliable than phase-shifting capacitor. (View)

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substitutive motor centrifugal switch circuit(2)

Published:2011/7/16 20:04:00 Author:chopper | Keyword: centrifugal switch

The principle of circuit The substitutive motor centrifugal switch circuit is formed by the capacitors C1,C2,resistor R,the relay K, the diodes VD1,VD2 and thermal relay KR,which is shown in Figure 4-126. After the power supply is turned on,one of the 220V AC voltage is added to the main winding of motor M(W1) through thermal relay KR,and the other is added to the starter circuit composed of the capacitor C3 and secondary winding (W2) of motor Mthrough normal closed contact of relay K,and then the motor M will start. (View)

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substitutive motor centrifugal switch circuit

Published:2011/7/16 19:55:00 Author:chopper | Keyword: centrifugal switch

The principle of circuit The substitutive motor centrifugal switch circuit is formed by the power supply circuit and delay control circuit,which is shown in Figure 4-125. 　 The power supply circuit is formed by the capacitor C1,discharge resistor R1,rectifier diodes VD1,VD2,filter capacitor C2 and voltage-regulator diode VS. Delay control circuit is formed by the resistor,capacitor C3,diodes VD3,VD4,transistors V1,V2,and the relay K. 　 20V AC voltage is dropped by C1,rectifiered by VD1 and VD2,filtered by C2 and regulated by VS,and then offer the delay circuit +12V operating power supply. (View)