Circuit Diagram

Light pipe amplifier circuit

Published:2011/4/24 7:11:00 Author:Nicole | Keyword: light pipe, amplifier circuit

This circuit is composed of light pipe and four operational amplifiers IC1. IC1a is operational amplifier, using silicon diode's exponential positive conductivity to change the light pipe output to logarithmic voltage change, its peak-peak value is in direct proportion to the ratio of white and black light current, it is irrelevant to the absolute value. IC1b is comparator, the output of amplifier IC1a is rose to fixed level by IC1b and peak value detector. So the singal is transferred into the microprocessor needed binary digital output. The output is compatible with TTL.   (View)

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Tape recorders remote volume control circuit composed of LC2200

Published:2011/4/22 1:18:00 Author:Rebekka | Keyword: Tape recorders remote volume control

LC2190/2200 remote encoding transmitter / receiver is improved LC219/220A ASIC. It has the decoding and error identification repeated comparisons, so you can effectively prevent the error action. LC2190 shape pin map. LC2200 shape pin map. LC219 internal block diagram. LC2200A internal block diagram. Main electrical parametersThe work oscillation frequency of LC2190 transmitter chip is 80kHz; Input duty cycle is 1:1, f = 40kHz square wave pulse; Repetition rate between output pulse train is decided by the the capacitors of CT end. It usually is 3 ~ 5Hz; Operating voltage range is 2.5 ~ 3.5V, typical value is +3 V; Quiescent power supply current is less than 1μA. The output can drive the power transistor to gain the large emission current. LC2200 receiver chip supply voltage range is 3 ~ 9v, typical value is +5 V; Quiescent supply current is less than 5μV; Each output drive current IoH ≥ 2mA, 10L ≥ 1mA. It can directly drive NPN transistor, LED and low power SCR. Infrared transmitter circuit composed of LC2190. Continuous key turns to a single-button circuit. Remote control circuit included in the volume composed of LC2200.   (View)

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High speed TTL probe circuit

Published:2011/4/17 8:00:00 Author:Nicole | Keyword: TTL probe

RS trigger is connected by NAND gate , it can test very narrow pulse, the narrowest pulse width is equal to the total delay time(about 30ns) of trigger's two NAND gate . When it appears pulse, the circuit will change the state, and it displays the output state of tigger by LED. After finding out the pulse, it must use K2 to reset the circuit. According to the choice of K1, this circuit will be in response to the positive pulse or negative pulse.   (View)

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Toyota Coaster bus automatic door circuit diagram

Published:2011/4/26 20:23:00 Author:Rebekka | Keyword: Toyota Coaster bus , automatic door

Toyota Coaster bus automatic door (folding doortype) circuit diagram   (View)

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Toyota Coaster bus automatic door （slide door） circuit diagram

Published:2011/4/26 20:25:00 Author:Rebekka | Keyword: slide door, Toyota Coaster bus , automatic door

Toyota Coaster bus automatic door （slide door） circuit diagram is shown as above.   (View)

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Toyota coaster bus start system and charging system circuit diagram

Published:2011/4/26 20:27:00 Author:Rebekka | Keyword: Toyota coaster bus , start system , charging system

Toyota coaster bus start system and charging system circuit diagram is shown as above.   (View)

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Toyota coaster bus air conditioning system circuit diagram 5

Published:2011/4/26 20:28:00 Author:Rebekka | Keyword: Toyota coaster bus , air conditioning system

Toyota coaster bus air conditioning system circuit diagram is shown as above.   (View)

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Toyota coaster bus air conditioning system circuit diagram 4

Published:2011/4/26 20:30:00 Author:Rebekka | Keyword: Toyota coaster bus, air conditioning system

Toyota coaster bus air conditioning system circuit diagram is shown as above.   (View)

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Toyota Coaster bus engine circuit diagram 2

Published:2011/4/26 20:34:00 Author:Rebekka | Keyword: Toyota Coaster , bus engine

Toyota Coaster bus engine circuit diagram is shown as above.   (View)

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Toyota coaster bus air conditioning system circuit diagram 1

Published:2011/4/26 20:44:00 Author:Rebekka | Keyword: Toyota coaster bus, air conditioning system

Toyota coaster bus air conditioning system circuit diagram is shown as above.   (View)

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Toyota coaster bus air conditioning system circuit diagram 2

Published:2011/4/26 20:31:00 Author:Rebekka | Keyword: Toyota coaster bus, air conditioning system

Toyota coaster bus air conditioning system circuit diagram is shown as above.   (View)

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Toyota coaster bus air conditioning system circuit diagram 3

Published:2011/4/26 20:31:00 Author:Rebekka | Keyword: Toyota coaster bus , air conditioning system

Toyota coaster bus air conditioning system circuit diagram is shown as above.   (View)

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Xinmei VL-95Q electric rice and porridge cooker circuit diagram

Published:2011/4/26 10:23:00 Author:Nancy | Keyword: electric rice cooker, porridge cooker

  (View)

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Toyota Coaster bus combination instrument circuit diagram 1

Published:2011/4/26 20:21:00 Author:Rebekka | Keyword: Toyota Coaster bus, combination instrument

  (View)

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sv-250 power supply circuit diagram

Published:2011/4/26 10:23:00 Author:Nancy | Keyword: power supply

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Timer automatic electric rice cooker circuit diagram

Published:2011/4/26 10:24:00 Author:Nancy | Keyword: Timer, automatic, electric rice cooker

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crystal diode DDZX5V6BTS internal circuit diagram

Published:2011/4/26 10:24:00 Author:Nancy | Keyword: crystal diode

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Toyota Coaster bus combination instrument circuit diagram 2

Published:2011/4/26 20:20:00 Author:Rebekka | Keyword: Toyota Coaster bus, combination instrument

Toyota Coaster bus combination instrument circuit diagram is shown as above.   (View)

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TCL868-CID03 Communication Single Chip Microcomputer Integrated Circuit

Published:2011/4/26 8:56:00 Author:TaoXi | Keyword: Communication Single Chip, Microcomputer Integrated

The TCL868CDO3 is the 4-bit CMOS microcomputer integrated circuit that belongs to the TCL company, this device can be used in TCL ID phone caller series. 1. Features The TCL868CDO3 IC contains the BELL202 or ITU一TV23 standard FSK decoder, the dual audio signal generator, the four-detection platform for low-voltage detection circuit, the LCD driver circuit and the power-saving mode control circuit.etc. It can be used in the call data reception, process and display, and it also has the pulse / DTMF dialing compatible fuction. 2.Pin functions and data The TCL868CDO3 IC is in the 100-pin softpackage, the IC's pin function and data is as shown in figure 1:   (View)

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SN75365 Four TTL-MOS Driver Circuit

Published:2011/4/26 9:00:00 Author:TaoXi | Keyword: Four, TTL-MOS Driver

The SN75365 is one kind of TTL-MOS driver that has four NAND functions, this device is the connector between TTL circuits and high current or high voltage systems, so it drives the large capacitive loads andcan be usedwith a variety of common-MOS or RAM device. Also this device has the high-conversion speed, low power consumption, and each two drives have two public enable input pins, and the SN75365 has standard bipolar and MOS-circuit power supply. The wiring diagram of the SN75365 of type 4062 P-channel MOS RAMis as shown.   (View)

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