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Index 1655

LA1185 audio IC circuit

Published:2011/6/30 19:28:00 Author:TaoXi | Keyword: audio, IC

The LA1185 audio IC circuit is as shown in the figure: (View)

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Vizi saloon car fan, warm wind and air conditioning circuits

Published:2011/6/30 19:33:00 Author:TaoXi | Keyword: Vizi, saloon car, fan, warm wind, air conditioning

The Vizi saloon car fan, warm wind and air conditioning circuits: (View)

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LA1186N audio IC circuit

Published:2011/6/30 19:29:00 Author:TaoXi | Keyword: audio, IC

The LA1186N audio IC circuit is as shown in the figure: (View)

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The Guangzhou-Honda instrument system circuit

Published:2011/6/30 20:20:00 Author:qqtang | Keyword: Guangzhou-Honda, instrument system

The Guangzhou-Honda instrument system circuit is shown in the figure. (View)

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LTC4008 internal structure and external components connection circuit

Published:2011/6/30 19:38:00 Author:TaoXi | Keyword: internal structure, external components, connection circuit

LTC4008 internal structure and external components connection circuit
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LA1260 audio IC circuit

Published:2011/6/30 19:30:00 Author:TaoXi | Keyword: audio, IC

The LA1260 audio IC circuit is as shown in the figure: (View)

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AC voltage level circuit

Published:2011/6/30 19:47:00 Author:TaoXi | Keyword: AC, voltage level

AC voltage level circuit
This circuit automatically or manually adjusts the level through a variable capacitor bleeder. Here the bleeder is composed of the varactor D, the capacitance and the resistance. The field effect transistor T1 can be used in the isolation between the signal source and the adjusting loop. The transistor T2 and T3 can be used to make the output circuit to has low resistance value. In order to reduce the waveform distortion when the high-frequency voltage is high, you can connect the circuit of figure (b) after the circuit of figure (a). (View)

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The constant temperature control circuit of the developing solution

Published:2011/6/30 20:19:00 Author:qqtang | Keyword: temperature control circuit, developing solution

In the figure is the constant temperature control circuit of the developing solution. This circuit consists of the step-down rectifier power supply circuit(B, D1～D4, C1 and so on), temperature detecting bridge R3~R4, voltage comparing amplifier and power output circuit 5G31, relay J, load RL and so on, of which R3 has the same resistance with R4, and they are linked to the passive input terminal as the Vref. R2 is a thermistor, R1 is the temperature adjusting resistor, RL is the loading resistor(heater) and 5G31 is the audio power amplifier.When the power is on, the temperature is low and the resistance of R1 is high. (View)

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General mobile phone battery charger circuit

Published:2011/6/30 19:50:00 Author:TaoXi | Keyword: General, mobile phone, battery, charger

General mobile phone battery charger circuit
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LA1265 audio IC circuit

Published:2011/6/30 19:31:00 Author:TaoXi | Keyword: audio, IC

The LA1265 audio IC circuit is as shown in the figure: (View)

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Vizi saloon car quartz clock, radio-cassette player and rear window defrosting circuits

Published:2011/6/30 19:35:00 Author:TaoXi | Keyword: Vizi, saloon car, quartz clock, radio-cassette player, rear window, defrosting circuits

The Vizi saloon car quartz clock, radio-cassette player and rear window defrosting circuits: (View)

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Potential isolated current measurement circuit

Published:2011/6/30 20:00:00 Author:TaoXi | Keyword: Potential, isolated, current measurement

Potential isolated current measurement circuit
This circuit sensitive component is connected into the magnetic susceptibility component of the differential circuit. By changing the taps of winding n1 and winding n2, you can change the measuring range of the measuring current. The two sensitive components B are connected in the bridge type circuit, the output of the bridge type circuit controls the differential input port of the operational amplifier. Figure (c) shows the relation curve between the measuring current and the measurement error meter indicating current IA. (View)

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Smart phone charger module circuit

Published:2011/6/30 20:02:00 Author:TaoXi | Keyword: Smart phone, charger, module circuit

Smart phone charger module circuit
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Low frequency adjustment circuit

Published:2011/6/30 20:16:00 Author:TaoXi | Keyword: Low frequency, adjustment circuit

Low frequency adjustment circuit
The output port of this circuit is connected with the output jack of the wobbling frequency signal generator, the wobbling frequency signal is rectified and adds to the Mosfet T1. The PNP transistor T2 adjusts the operating point through the potentiometer RP, the output signal is led to the final stage transistor through the transistor T3. The output signal of the final stage transistor's collector adjusts the low frequency oscillator's anode voltage with correct polarity. (View)

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The electric switch circuit of touch type (5)

Published:2011/6/30 5:27:00 Author:Seven | Keyword: electric switch, touch type

The electric switch circuit of touch type in the following introduction is in 2-line connection, which can easily replace the ordinary mechanical switch. The circuit consists of the time-based integrated circuit IC(NE555), thyristor VT, rectifying diodes VD1 and VD4, regulated diode VS and so on. Elements selection. R2 is chosen as the 1/2W carbon film resistor, and the other resistors can be 1/4W carbon film resistor. C1 can be the aluminium electrolytic capacitor with the withstand voltage higher than 16V, C2 can be the ordinary dacron capacitor. All of VD1~VD4 are chosen as the 1N4007 rectifier diode. (View)

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The electric switch circuit of touch type (1)

Published:2011/6/30 5:13:00 Author:Seven | Keyword: electric switch, touch type

The electric switch circuit of touch type (1)
The following is to introduce a switch circuit of touch type which is made of CD4017 digital integrated circuit, thyristors and so on, when the hand touches the control pole, the electric switch will take action (ON or OFF) once, which has the same functions as ordinary mechanical switch, and it can be used to control the lighting lamp, ventilator and so on.This switch circuit consists of the power supply circuit, touching control input circuit, counter circuit and the control executing circuit. Elements selection:R1~R8 can be chosen as the 1/4W carbon film resistor or metal film resistor. (View)