Published:2011/4/13 4:27:00 Author:Ecco | Keyword: frequency-modulated signal, generator
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Published:2011/4/13 4:25:00 Author:Ecco | Keyword: 1Hz , Clock signal source
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Published:2011/4/12 3:03:00 Author:Rebekka | Keyword: CNC cutting machine, Optical amplification
Photoelectric conversion is composed of photosensitive diode and BG1. Schmitt trigger is composed of BG2 and G3. BG4 is inverter. BG1 base potential rises at illumination. GB1 stops, BG2 works, BG2 stops, BG4 works and outputs positive signal. (View)
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Published:2011/4/12 21:33:00 Author:Rebekka | Keyword: fancy lantern
The circuit is 3-way fancy lantern circuit. It uses frequency division effect to divide the trigger triac audio signals into 3 frequency, high, medium and low. They are used for triggering SCR1,SCR2,SCR33 controlled silicon to controll blue, green, red 3-way lights. The 3 colors lights changes with the music melody beautifully.
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Published:2011/4/12 2:52:00 Author:Rebekka | Keyword: trigger and switch tube , motor automatic governor
Motor automatic speed governor circuit is composed of 555 trigger and a switch. The sample circuit is composed of R7 and motor in series. When the operation runs within the specified speed, sample voltage VA<1/3VDD, 555 resets, VT1 is conducted, motor runs with power; When the speed overrun, VA>1/3VDD, the connection of R1 makes 555 reset and VT1 stop, the motor power-off, inertial rotation. When VA<1/3VDD, it makes 555 resets again, VT1 will be conducted and the motor works. It controlls the speed of motor all day long. RP1 is used for adjusting the control trigger level. (View)
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Published:2011/4/13 3:59:00 Author:Rebekka | Keyword: application circuit
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Published:2011/4/13 3:58:00 Author:Rebekka | Keyword: parameter list
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Published:2011/4/13 3:42:00 Author:Rebekka | Keyword: pinout and function
PT2262-IR/2272 pinout and function circuit diagram is shown as above. (View)
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Published:2011/4/13 3:41:00 Author:Rebekka | Keyword: application circuit
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Published:2011/4/13 3:40:00 Author:Rebekka | Keyword: internal circuit and pinout
MT8870 is a DTMF decoder IC. (View)
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Published:2011/4/13 3:39:00 Author:Rebekka | Keyword: pinout function
MK5087 is a DTMF encoder IC.DTMF code is a multi-tone multi-frequency coded shorthand. (View)
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Published:2011/4/13 3:25:00 Author:Rebekka | Keyword: internal circuit and pinout
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Published:2011/4/13 3:13:00 Author:Rebekka | Keyword: Wireless transmitter circuit
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Published:2011/4/13 3:12:00 Author:Rebekka | Keyword: remote control transmitter and receiver , application circuit
Composed of LC219/220A toy cars radio remote control transmitter and receiver application circuit diagram is shown as above. (View)
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Published:2011/4/13 4:01:00 Author:Rebekka | Keyword: audio amplifier
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Published:2011/4/13 2:58:00 Author:Rebekka | Keyword: Transmitting and receiving circuit
MC145026 integrated circuit is a digital code;MC145027 digital decoding IC. (View)
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Published:2011/4/13 4:11:00 Author:Rebekka | Keyword: TV remote control circuit
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Published:2011/4/13 4:11:00 Author:Rebekka | Keyword: TV remote control circuit
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Published:2011/4/13 4:10:00 Author:Rebekka | Keyword: TV remote control circuit
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Published:2011/4/13 4:10:00 Author:Rebekka | Keyword: TV remote control circuit
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