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Index 1742

The TV video amplifier circuit (1)

Published:2011/6/19 20:51:00 Author:qqtang | Keyword: video amplifier

The TV video amplifier circuit (1)
The TV video amplifier circuit (1) is shown in the figure.   (View)

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The DEMO-80110NE circuit

Published:2011/6/19 20:50:00 Author:qqtang | Keyword: circuit

The DEMO-80110NE circuit
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The DEMO-80110NE module pin circuit

Published:2011/6/19 20:49:00 Author:qqtang | Keyword: module pin circuit

The DEMO-80110NE module pin circuit
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The relay circuit modified from electric fans

Published:2011/6/19 20:49:00 Author:qqtang | Keyword: relay circuit, electric fans

The relay circuit modified from electric fans
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The 1~20MHz clock mixer circuit

Published:2011/6/19 21:31:00 Author:qqtang | Keyword: clock mixer

The 1~20MHz clock mixer circuit
In the figure is the 1~20MHz clock mixer circuit which can generate precise clock signals. UoA outputs the 1~20MHz signal whose resolution ratio is 100KHz, but UoB and UoC output signals whose frequency is 1/10 of the former. If the input signal Ui is 10KHz, which is got by splitting the crystal circuit, then the precision is the same as the crystal oscillator.   (View)

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The key ring wireless encoding remote controller circuit (1)

Published:2011/6/19 21:33:00 Author:qqtang | Keyword: key ring, wireless encoding, remote controller

The key ring wireless encoding remote controller circuit (1)
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The MB1570 circuit

Published:2011/6/19 21:38:00 Author:qqtang | Keyword: circuit

The MB1570 circuit
In the figure is the example of the MB1570 circuit, which is a Pl-I mixer integrated circuit, and the band width is 26Hz.   (View)

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The audio inductance wireless headphone circuit

Published:2011/6/19 21:39:00 Author:qqtang | Keyword: audio inductance, wireless headphone

The audio inductance wireless headphone circuit
The audio inductance wireless headphone circuit is shown in the figure.   (View)

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The 6l6 single terminal headphone amplifier circuit

Published:2011/6/19 21:40:00 Author:qqtang | Keyword: single terminal, headphone amplifier

The 6l6 single terminal headphone amplifier circuit
The 6l6 single terminal headphone amplifier circuit is shown in the figure.   (View)

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The portable high-speed light pulse generating circuit

Published:2011/6/19 21:42:00 Author:qqtang | Keyword: high-speed, light pulse

The portable high-speed light pulse generating circuit
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The TC1 vacuum pipe headphone power amplifier circuit

Published:2011/6/19 21:44:00 Author:qqtang | Keyword: vacuum pipe, headphone, power amplifier

The TC1 vacuum pipe headphone power amplifier circuit
The TC1 vacuum pipe headphone power amplifier circuit is shown in the figure.   (View)

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The auto charging motor circuit

Published:2011/6/19 21:45:00 Author:qqtang | Keyword: charging motor

The auto charging motor circuit
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The principle diagram of the bus non-contact IC reader/writer circuit

Published:2011/6/19 21:48:00 Author:qqtang | Keyword: principle diagram, non-contact IC

The principle diagram of the bus non-contact IC reader/writer circuit
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The headphone amplifier circuit composed of the dual op-amp (OPA2604, et al)

Published:2011/6/19 21:53:00 Author:qqtang | Keyword: headphone amplifier, dual op-amp

The headphone amplifier circuit composed of the dual op-amp (OPA2604, et al)
The headphone amplifier circuit composed of the dual op-amp (OPA2604, et al) is shown in the figure.   (View)

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The ZEN headphone amplifier circuit

Published:2011/6/19 21:50:00 Author:qqtang | Keyword: headphone, amplifier circuit

The ZEN headphone amplifier circuit
The ZEN headphone amplifier circuit is shown in the figure.   (View)

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The low-voltage 60min timing circuit

Published:2011/6/19 22:41:00 Author:qqtang | Keyword: low-voltage, timing circuit

The low-voltage 60min timing circuit
In the circuit, TC9l60 is the timer integrated circuit, in the chip there is an oscillating circuit and 20-bit binary counter, the maximum timing is 60min, the oscillating frequency is 1KHz. The timer resistance RT is higher than 20OkΩ. According to C2≤1/(2.2fcRt), if C2 is 1800pF, then Rt=216.76kΩ, which is serially connected with R2. The output is the leakage pole open type, OUT1~4 is graded every 15min, and it stops when the timing is over, by this moment, the power consumption is only 1μA.   (View)

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The The wide band reacting adjuster 1B31 circuit of motivated voltage rising

Published:2011/6/19 22:31:00 Author:qqtang | Keyword: wide band, reacting adjuster, motivated voltage

The The wide band reacting adjuster 1B31 circuit of motivated voltage rising
The The wide band reacting adjuster 1B31 circuit of motivated voltage rising
The The wide band reacting adjuster 1B31 circuit of motivated voltage rising

When the 19-pin of wide band reacting adjuster 1B31 touches the 20-pin, the programmable electric bridge motivation source outputs a voltage of UEXC=+10V. To rise UEXC to +10~+15V, we must fix a resistor REXT between EXC ADJ and SENSE, the circuit is shown in the figure. The REXT value is decided by the following formula (the unit of the resistance is kΩ): of which:   (View)

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The (wide band reacting adjuster 1B31) circuit of motivated voltage lessening

Published:2011/6/19 22:23:00 Author:qqtang | Keyword: wide band, reacting adjuster, motivated voltage

The (wide band reacting adjuster 1B31) circuit of motivated voltage lessening
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The U6046B timer application circuit

Published:2011/6/19 22:17:00 Author:qqtang | Keyword: timer, application circuit

The U6046B timer application circuit
The U6046B timer application circuit

In figure 5-22 is the U6046B timer application circuit. U6046B is the long-time limiting timer integrated chip, which is in 8-pin DIP package, the timing span is from 3.7s to 20h, the power supply voltage is from 6~18v. In figure 5-22 (a) is the single stable timing circuit composed of U6046B, the working voltage +Ucc is added on 8-pin after being limited by R1 and filtered by C1, then there generates a 5.2V stable ouput voltage on 7-pin of U6046B and the voltage is the input of 3-pin, so that U6046B is started. The sucker current on 2-pin makes the relay K close, the timing td is started.   (View)

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The LC-KING A headphone amplifier circuit

Published:2011/6/19 22:06:00 Author:qqtang | Keyword: headphone amplifier

The LC-KING A headphone amplifier circuit
The LC-KING A headphone amplifier circuit is shown in the figure.   (View)

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