Electrical Equipment Circuit

74 series digital circuit 74155/156 and other 2 to 4 line decodes/demultiplexers

Published:2011/4/23 3:11:00 Author:May | Keyword: digital, 2 to 4 ine decodes, demultiplexers

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Self-adapting zero voltage switching electron ballast

Published:2011/4/23 3:37:00 Author:May | Keyword: self-adapting, zero voltage, switching, electron ballast

The principle diagram of self-adapting zero voltage switching electron ballast IR2520 is mainly used for driving fluorescent lamp with power under 40W. The rated power of the lamp is different. The parameters of components such as Q1, Q2, L2, C7, etc have several differences. For example, when rated power of lighting tube is in the range of 16-28W, Q1 and Q2 should choose MOSFET which is 500V, 2A, such as (IRFC420, etc), the induction value of L2 is about 1.8mH and 3.5mH, the capacity of C7 is normally about 3.3nF-5.6nF. The power of lamp is larger, the induction of L2 is smaller, the real value is determined by debugging in order to close or meet the rated current of the lamp.   (View)

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Accompanying sound circuit: TDA2616

Published:2011/4/15 5:18:00 Author:May | Keyword: Accompanying sound

TDA2616 pin function and reference voltage: pin 1: 10V-signal input 1 pin 2: 5V-noise elimination ( low level noise elimination) pin 3: 10V-1/2 reference voltage pin 4: 10V-signal output 1 pin 5: 0V-ground pin 6: 10V-sinal output 2 pin 7: 20V-power supply pin 8: 10V-negative-going input end pin 9: 10V-signal input 2   (View)

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Single valve direct radio circuit diagram

Published:2011/3/30 22:14:00 Author:Ecco | Keyword: Single valve , direct radio

Input tuning loop: It is consisted of magnetic aerial T and 2 changeable capacitance, and its function is receiving electromagnetic wave and choosing broadcasting station. High frequency amplification and demodulation: The TA7642 is a miniature integrated circuit, the shape is similar to the triode which is shown as chart. There are 10 triodes, including third stage high amplifier, one stage demodulation and one stage. Low frequency amplification: The low frequency amplification is completed by two triode VT1, VT2 to hit the speaker of collecting electrode connecting, which converts the low frequency current as sound, the potential machine RP is used as controlling volume.   (View)

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Capacitive sensor signal disposal device CS2001 typical application circuit

Published:2011/3/23 4:51:00 Author:may | Keyword: Capacitive sensor signal disposal device

Capacitive sensor signal disposal device CS2001 typical application circuit is shown in the following diagram:   (View)

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Ultrasonic mosquito worm repellant circuit

Published:2011/4/23 1:56:00 Author:May | Keyword: Ultrasonic, mosquito worm repellant

Ultrasonic mosquito worm repellant circuit It is a very simple ultrasonic mosquito, worm, cockroach repellant circuit. The circuit is relaxation oscillator consits of CMOS 4047 single shot trigger. It can make its center frequency at about 22kHz by adjusting 4k7. Then it can output by bridge type power tube composed of four transistors. And it can push 3.25 inch Piezo to generate ultrasonic signal.   (View)

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Baohua KC-14 window mode air conditioner circuit

Published:2011/4/24 1:11:00 Author:May | Keyword: window mode, air conditioner

Baohua KC-14 window mode air conditioner circuit is show in the diagram:   (View)

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Huali KC-14、KC-16、KC-18、KC-23 window type air conditioner circuit

Published:2011/4/24 1:21:00 Author:May | Keyword: air conditioner, window type

Huali KC-14、KC-16、KC-18、KC-23 window type air conditioner circuit is shown in the following diagram:   (View)

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The principle circuit diagram of two diphase stepper motor driver

Published:2011/4/11 2:44:00 Author:may | Keyword: two diphase stepper motor, driver

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Huali KCD-23 type window type air conditioner diagram

Published:2011/4/24 1:14:00 Author:May | Keyword: Huali, window type, air conditioner

Huali KCD-23 type window type air conditioner diagram is shown in the diagram:   (View)

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Electronic rabbit catcher schematic circuit diagram

Published:2011/4/14 5:47:00 Author:may | Keyword: Electronic rabbit catcher

Electronic rabbit catcher schematic circuit diagram is shown in the following diagram:   (View)

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DC Motor armature core circuit diagram

Published:2011/4/11 2:55:00 Author:may | Keyword: DC Motor armature core

Two usage: [armature core assembly drawing ( diagram) ] As major component of main magnetic circuit Embedded armature winding is usually stamped and laminated by 0.5 mm silicon steel pates. diagram: DC Motor armature core circuit diagram   (View)

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DC motor static part circuit diagram

Published:2011/4/6 5:45:00 Author:may | Keyword: DC motor static part

The main pole is an electromagnet, with an iron core laminated and tighten by 1-1.5mm steel blunt pieces. diagram: DC motor static part circuit diagram   (View)

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Electrical pulse treatment circuit

Published:2011/4/2 4:26:00 Author:may | Keyword: Electrical pulse treatment

Electrical pulse treatment circuit is shown in the diagram:   (View)

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DC Motor brush device circuit diagram

Published:2011/4/11 2:52:00 Author:may | Keyword: DC Motor brush device

Graph: Role: to introduce and educe DC voltage and DC current from the circuit Graph: composed by brush bar, brush yoke and copper wire plait   (View)

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The priciple model circuit diagram of the DC generator

Published:2011/4/6 5:46:00 Author:may | Keyword: DC generator

diagram: The priciple model circuit diagram of the DC generator   (View)

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DC motor structure circuit

Published:2011/4/6 5:45:00 Author:may | Keyword: DC motor structure

DC motor structure circuit diagram:DC motor rotor graph rotational part called   (View)

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Ventilator automatically stop circuit diagram

Published:2011/4/11 2:26:00 Author:may | Keyword: Ventilator automatically stop

Ventilator automatically stop circuit diagram is shown in the diagram:   (View)

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DC motor armature winding circuit diagram

Published:2011/4/14 5:56:00 Author:may | Keyword: Motor armature winding

The main circuit of DC motor is composed of many coils linked according to certain rules, components and embedding and placing method. To achieve the electromechanical energy conversion, electromotive force are produced by current and induction. diagram: DC motor armature winding circuit diagram   (View)

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Speed adjustable cleaner circuit

Published:2011/4/1 2:01:00 Author:may | Keyword: Speed adjustable cleaner circuit

This cleaner adopts thyristor to make up speed adjust circuit. It can control the speed of motor according to requirmentand and the portative force of schmoe pipeline. The diagram is speed adjust circuit, and it is comparative maturity, normally used in top quality high power cleaner.   (View)

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