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IR2156 fluorescent lamp integrated circuit electron ballast

Published:2011/4/23 3:36:00 Author:May | Keyword: fluorescent lamp, integrated, electron ballast

IR2156 fluorescent lamp integrated circuit electron ballast
IR2156 can offer solution of high cost-effectiveness for fluorescent electron ballast. It can integrate lighting tube error protection and the programmable working frequency with warm-up, lighting and ballast continue working. (View)

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The principle diagram of 400W switchching power output dc5v/80a

Published:2011/4/11 1:03:00 Author:may | Keyword: switchching power, 400W, output dc5v/80a

The principle diagram of 400W switchching power output dc5v/80a
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330W AC stabilized voltage supply circuit

Published:2011/4/15 5:34:00 Author:May | Keyword: stabilized voltage supply

330W AC stabilized voltage supply circuit
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3~120V stabilized voltage supply circuit

Published:2011/4/14 5:58:00 Author:may | Keyword: stabilized voltage supply

3~120V stabilized voltage supply circuit
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50kHz FM optical receiver circuit

Published:2011/4/15 5:26:00 Author:May | Keyword: FM, optical receiver

50kHz FM optical receiver circuit
This circuit is used in impulse speed modulation system. In this system, transmitter change impulse speed of modulated beam in optical fiber, let it change around 50kHz center frequency. L14G2 optical transistor convert molulated light to radio-frequency signal. The radio-frequency isusedfor demodulating. It can recover original audio frequency signal. (View)

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Protective current adjustable 15V stabilied voltage supply

Published:2011/4/15 5:21:00 Author:May | Keyword: Protective current adjustable, 15V, stabilied voltage supply

Protective current adjustable 15V stabilied voltage supply
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Accompanying sound circuit: TDA2616

Published:2011/4/15 5:18:00 Author:May | Keyword: Accompanying sound

TDA2616 pin function and reference voltage: pin 1: 10V-signal input 1 pin 2: 5V-noise elimination ( low level noise elimination) pin 3: 10V-1/2 reference voltage pin 4: 10V-signal output 1 pin 5: 0V-ground pin 6: 10V-sinal output 2 pin 7: 20V-power supply pin 8: 10V-negative-going input end pin 9: 10V-signal input 2 (View)

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Start-up circuit adopts FET

Published:2011/4/14 5:57:00 Author:may | Keyword: Start-up, FET

Start-up circuit adopts FET
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Logarithmic amplification circuit

Published:2011/4/2 4:06:00 Author:may | Keyword: Logarithmic amplification

Logarithmic amplification circuit
Logarithmic amplification is show in the following picture: (View)

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Practical high speed logarithmic amplifier circuit

Published:2011/4/23 1:04:00 Author:May | Keyword: logarithmic amplifier

Practical high speed logarithmic amplifier circuit is shown in the following picture: (View)

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Logarithmic amplifier with temperature compensation circuit

Published:2011/4/23 1:04:00 Author:May | Keyword: logarithmic amplifier, temperature compensation

Logarithmic amplifier with temperature compensation circuit is shown in the following picture: (View)

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Control and alarm circuit diagram composed of SGZ07 sound and light alarm IC

Published:2011/4/28 22:59:00 Author:Ecco | Keyword: Control , alarm , sound , light, alarm IC

Control and alarm circuit diagram composed of SGZ07 sound and light alarm IC. In the figure, the circuit can work in dual-band sound, light alarm circuit by controlling the K1, K2. If the R1, R2 in the circuit are changed in the corresponding thermal resistor (measured value), it can achieve temperature control and alarm circuit. (View)

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Double frequency sound and light source circuit diagram composed of SGZ07

Published:2011/4/28 23:01:00 Author:Ecco | Keyword: Double frequency , sound , light , source , alarm IC

Double frequency sound and light source circuit diagram composed of SGZ07 sound and light alarm IC. The corresponding relationship between C1, C2 and the output signal. (View)

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Mashgas, coal gas detection and alarm circuit

Published:2011/4/28 22:56:00 Author:Ecco | Keyword: Mashgas, coal gas, detection , alarm , monolithic, integrated circuit

Mashgas, coal gas detection and alarm circuit composed of CH217 monolithic gas detection alarm integrated circuit. R1 in the figure is the gas sensing probe, the resistance reduces linearly with gas concentration arbitrarily increasing, RP3 is used to adjust the amplifier output, R6, R7 extract both forecasting and risk reference signal voltage. (View)

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LED digital salient pole appearance circuit diagram

Published:2011/4/29 0:37:00 Author:Ecco | Keyword: LED , digital, salient pole , appearance

LED digital salient pole appearance circuit diagram
The light-emitting diode display is also known as LED digital display, it uses the feature, which light-emitting diodes will be lit by flowing certain current under forward voltage, the seven segment LED being packaged will become a LED digital display. Its shape is shown as the chart. (View)

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Two RY927 league level applications circuit diagram

Published:2011/4/28 22:55:00 Author:Ecco | Keyword: Two , league level , application

Two RY927 league level applications circuit diagram
When RY927 is using cascadedly, it needs to connect the related input ends according to the chart. The connecting method is the same when there are more than two stages. It should be noted that RY927 allows seven cascaded as maximum, and it can drive 84 LED at best. Besides the above applications, it can also constitute the automatic dimming, speed tables and so on. If it requires less precision, it can also be used for voltage indication, field instruction and other circuits. (View)

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The logic pulse generator composing of CD4011

Published:2011/4/18 20:16:00 Author:Ecco | Keyword: logic pulse generator

The logic pulse generator composing of CD4011
Logic pulse generator can transport either positive or negtive logic pulse according to the need, the circuit is as shown. The circuit consists of a four - two input NAND gate CD4011, of which the door Dl, D2 form a RS trigger pulse, D3, D4 are used as inverters. It isolates the output of D1 and then drives a light-emitting diode after reversing, it is used to indicate the logic state of the output pulse. (View)

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Relay status indication circuit diagram

Published:2011/4/29 1:15:00 Author:Ecco | Keyword: Relay, status indication

Figure shows the relay status indication circuit. The relay has one or more sets of contacts, If the public end of a group of contacts connects to VDD, the public end will connect to normally closed contacts in releasing state, and LED-R emits red light; the public end will connect to normally open contacts in pulling state, and LED-G emits green light. (View)