Published:2011/11/11 2:34:00 Author:Ecco | Keyword: Low-noise, 5MHz , oscillator
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Published:2011/11/11 2:37:00 Author:Ecco | Keyword: Single-tube, RF oscillator
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Published:2011/11/11 2:29:00 Author:Ecco | Keyword: Single-tube, quartz crystal oscillator
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Published:2011/11/11 2:24:00 Author:Ecco | Keyword: Simple FM emitter
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Published:2011/11/11 2:29:00 Author:Ecco | Keyword: Series resonant circuit
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Published:2011/11/11 2:30:00 Author:Ecco | Keyword: Magnetic pendulum oscillation
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Published:2011/11/11 2:18:00 Author:Ecco | Keyword: 4-tube FM Transmitter
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Published:2011/11/11 2:11:00 Author:Ecco | Keyword: FM receiver
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Published:2011/11/4 3:00:00 Author:Ecco | Keyword: Key pin features , audio amplifier
The monolithic double power amplifier can be connected to 8Ω or 16Ω load to make each channel output 4W. The ripple suppresses is 70dB; the channel isolation is 75dB, and the input impedance 3MΩ, and it contains current limiting circuit; it has the heating protection function.
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Published:2011/11/8 21:18:00 Author:Ecco | Keyword: automatic controlling , electric contact , pressure gauge, connecting, intermediate relay
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Published:2011/11/8 21:16:00 Author:Ecco | Keyword: Electric pressure gauge, connecting, controlling water pump
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Published:2011/11/3 2:04:00 Author:Ecco | Keyword: Y-△ starting , motor , without power switch
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Published:2011/11/3 2:05:00 Author:Ecco | Keyword: Y-△ starting , motor , without power switch
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Published:2011/11/7 21:41:00 Author:Ecco | Keyword: boost circuit , Timer IC
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Published:2011/11/1 21:18:00 Author:Ecco | Keyword: AC voltage, measuring circuit , carrier
When the input voltage is ±0.1V, adjusting R3 can make the measuring voltage reach ±10V.
+V1, -V1, and +V2, -V2 are 15V, but GND uses different power supplies.
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Published:2011/11/7 21:13:00 Author:Ecco | Keyword: integrated infrared receiver, pre- amplifier
In the circuit, it uses the integrated amplifier, so the circuit is simple with small size. It uses the TDA4050 IC, and the weak infrared signal is received by the photosensitive diode VD,then it is amplified by transistor. As a result of the condenser lens ( diameter is about 15mm, focal length is about 30mm), it can increase the effective distance with 20 to 30 times. Capacitor C can effectively reduce the range of 50 ~ 100Hz low-frequency interference signals.
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Published:2011/11/1 21:55:00 Author:Ecco | Keyword: output interface, Hall switch, driver relay
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Published:2011/11/1 22:00:00 Author:Ecco | Keyword: output interface , Hall switch, collector
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Published:2011/11/1 21:53:00 Author:Ecco | Keyword: output interface , Hall switch, monosilicate
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Published:2011/11/1 21:51:00 Author:Ecco | Keyword: connection, output interface , Hall switch , MOS circuit
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