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RC bridge oscillating circuit with regulating ring

Published:2011/8/19 2:28:00 Author:Jessie | Keyword: RC bridge oscillating, regulating ring

RC bridge oscillating circuit with regulating ring
Connectingregulating ring to circuit, and adjusting potentiometer Rp, then you can use an oscilloscope to observe the output wave of oscillator circuit and the change of oscillating circuit's output wave, we will realize the influence of stability of regulating ring to sinusoidal oscillator circuit performance. (View)

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High input-high output integrated regulated power supply circuit circuit diagram 4

Published:2011/8/19 2:29:00 Author:Jessie | Keyword: High input-high output , integrated regulated power supply

High input-high output integrated regulated power supply circuit circuit diagram 4
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SA866 pin array diagram

Published:2011/4/10 22:50:00 Author:may | Keyword: pin array

SA866 pin array diagram
SA866 is special asynchronous machine SPWM control IC. It integrates kinds of protection function except generate SPWM pulse which is meeting requirements according to setup parameter. It also can fast cut off SPWM pulse in emergency, to protect frequency conversion power supply and load. (View)

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Temperature monitoring alarm equipment circuit

Published:2011/4/14 6:43:00 Author:may | Keyword: Temperature monitoring, alarm equipment

The temperature monitoring alarm equipment circuit introduced in this example has high , middle , low 3 gear temperature indication. It can send out alarm signal when the temperature is too high or too low. It can use in the occasion of big-arch shelter, greenhouse, etc which is needing temperature control. This temperature monitoring alarm equipment consists of temperature monitoring/indication circuit and voice alarm circuit. The circuit is shown in the diagram. Theoptions of components R1~R4 chooses 1/4W metal-film resistor or carbon film resistor. RP chooses compound film resistor or variable resistor. VD1~VD3 all choose 1N4148 type silicon switching diode. VL1~VL3 all choose Φ3mm LED V chooses S8550 or 3CG8850 type silicon PNP transistor. IC1 chooses ZH-3 type photometry application specific integrated circuit. HA chooses DC electric magnetic buzzer with internal alarm voice source. (View)

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Electronic transformer with dependable performance

Published:2011/4/14 6:52:00 Author:may | Keyword: Electronic transformer, dependable performance

Electronic transformer with dependable performance
The circuit can steady work to consult the circuit diagram with no changes. Output voltage is 11V-13V, output current is 6A, working frequency is 60kHz. It can change working frequency by changing the numerical value of C3, C4, R1, R2. Its no-load current is very small. (View)

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Parallel push-pull voltage changer

Published:2011/4/14 6:52:00 Author:may | Keyword: Parallel push-pull, voltage changer

Parallel push-pull voltage changer
This circuit adopts two capacitors with 100μF to make up man-made star point. When shutting off, this circuit can prevent transistor from destroying by high back voltage. Using regulation resistance with 50Ω can adjust the turn on level of transistor. The usage of 0.1μF capacitor is toincrease thespeed of on-off. The data of transformer: Winding np= 160turns, 0.5mm copper lacquered wire nr= 13turns, 0.2mm copper lacquered wire ng= 1300turns, 0.15mm copper lacquered wire The transistor in parallel push-pull transformer should have the ability of high withstand collector-emitter back voltage. (View)

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Voltage changer controls frequency by blocking oscillator

Published:2011/4/14 6:50:00 Author:may | Keyword: Voltage changer, blocking oscillator

Voltage changer controls frequency by blocking oscillator
This circuit is mutual coupling by three windings of blocking oscillator transformer. This let two transistors in turns tocontrol and turn on. Each pulse can change the state of transformer, because two transistors cut off in a short time, and, later the transistor which is cutting off before is turn on because the voltage of transformer is reversing. The duration of two half-wave is the same. This time depends on the parameter of RC link. The oscillation frequency can easily adjust from 50Hz to 1kHz. Data of transformer Tr1: Wing n1= 100turns, 0.5mm copper enameled wire n2= 90turns, 0.5mm copper enameled wire n1= 150turns, 0.5mm copper enameled wire Data of transformer Tr2: Wing na= 25turns, 1.9mm copper enameled wire (double wrap) nr= 20turns, 0.43mm copper enameled wire (double wrap) na= 1160turns, 0.43mm copper enameled wire (View)

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Switching supply driving transformer

Published:2011/4/14 6:48:00 Author:may | Keyword: Switching supply, driving transformer

The introduction of winding coiling of high frequency transformer (switching supply driving transformer) Switching supply driving transformer EE-18 We can choose EE-18 magnetic core or the assorted skeleton of EI-18. One can put N1 and others winding in insulating barrier, N2, N3 double winding along with N4, N5. N2, N3, and N4, N5 is in insulating barrier. (View)

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Single-stage multi-channel input circuit of tube by coupling resistor

Published:2011/10/14 1:44:00 Author:Ecco | Keyword: Single-stage , multi-channel input, coupling resistor

Single-stage multi-channel input circuit of tube by coupling resistor
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TDA6103 video amplifier circuit diagram

Published:2011/10/14 3:14:00 Author:Ecco | Keyword: video amplifier

TDA6103 video amplifier circuit diagram
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KA2181 application circuit diagram

Published:2011/10/16 21:57:00 Author:Ecco | Keyword: application circuit

KA2181 application circuit diagram
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M50126P logic frame circuit diagram

Published:2011/10/16 22:26:00 Author:Ecco | Keyword: logic frame

M50126P logic frame circuit diagram
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LMl872 application circuit diagram

Published:2011/10/16 22:25:00 Author:Ecco | Keyword: application circuit

LMl872 application circuit diagram
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Low-impedance input circuit diagram of tube

Published:2011/10/14 1:39:00 Author:Ecco | Keyword: Low-impedance input, tube

Low-impedance input circuit diagram of tube
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Multi-channel audio input mixing circuit of tube

Published:2011/10/14 1:52:00 Author:Ecco | Keyword: Multi-channel, audio input mixing

Multi-channel audio input mixing circuit of tube
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Common-anode loaded inverter circuit of tube

Published:2011/10/14 1:50:00 Author:Ecco | Keyword: Common-anode loaded inverter

Common-anode loaded inverter circuit of tube
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The typical self-bias power amplifier stage circuit of tube

Published:2011/10/14 1:48:00 Author:Ecco | Keyword: self-bias , power amplifier , tube

The typical self-bias power amplifier stage circuit withoutdebugging of tube The typical semi-debugself-bias power amplifier stage circuit of tube (View)

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The shape circuit of common potentiometer

Published:2011/10/14 1:42:00 Author:Ecco | Keyword: shape, common potentiometer

The shape circuit of common potentiometer
a). b): potentiometer with switch c): Slide potentiometer d): asynchronous different double-axis potentiometer e): locking-type potentiometer (View)