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Shanghai Nicera human body infrared sensor circuit diagram

Published:2014/2/23 20:51:00 Author:lynne | Keyword: Shanghai Nicera human body infrared sensor circuit diagram,

Shanghai Nicera human body infrared sensor circuit diagram
The front of the low frequency signal amplifying circuit level, is about 100 times magnification, the amplified signal through R6, C5 0.2-10HZ signal selected again, and finally to re IC1B amplifies the op amp is 5 feet 1/2VCC voltage pin, when static, 6 and 7, the voltage is also 1/2VCC, when there is a signal, the pin 6 will have a voltage swing up and down around 1/2VCC voltage value, the voltage is further amplified by the op amp, input to the threshold comparator circuit behind the threshold circuit input signal whether you are under partial or biased in 1/2VCC voltage exceeds the threshold value will be in the cathode of the diode 4148 outputs a high level signal. RP1 and RP2 can adjust the sensitivity of detection, the general RP2 can be used instead of a 220K resistor, as long as regulation RP1 it.   (View)

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Ultrasonic sensor circuit

Published:2014/2/21 20:09:00 Author:lynne | Keyword: Ultrasonic sensor circuit,

Ultrasonic sensor circuit
Ultrasonic sensor circuit shown in Figure:   (View)

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LMl94 geminate transistors temperature sensor interface circuit

Published:2014/2/21 20:00:00 Author:lynne | Keyword: LMl94 geminate transistors temperature sensor interface circuit,

LMl94 geminate transistors temperature sensor interface circuit
LMl94 geminate transistorstemperature sensor interface circuit shown in Fig.:   (View)

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Dongfeng Peugeot Citroen Picasso 2.0L sedan position lamp circuit

Published:2014/2/19 20:18:00 Author:lynne | Keyword: Dongfeng Peugeot Citroen Picasso 2.0L sedan position lamp circuit,

Dongfeng Peugeot Citroen Picasso 2.0L sedan position lamp circuit
Dongfeng Peugeot Citroen Picasso 2.0L sedan position lamp circuit shown in Figure:   (View)

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Make straight play three digital voltmeter circuit diagram

Published:2014/2/18 21:47:00 Author: | Keyword: Make straight play three digital voltmeter circuit diagram,

Make straight play three digital voltmeter circuit diagram
Make straight play three digital voltmeter circuit diagram   (View)

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Four and a half LCD digital voltmeter circuit diagram

Published:2014/2/18 21:44:00 Author: | Keyword: Four and a half LCD digital voltmeter circuit diagram,

Four and a half LCD digital voltmeter circuit diagram
Four and a half LCD digital voltmeter circuit diagram   (View)

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Four and a half LED counting circuit diagram

Published:2014/2/18 21:41:00 Author: | Keyword: Four and a half LED counting circuit diagram,

Four and a half LED counting circuit diagram
Four and a half LED counting circuit diagram   (View)

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Double pressure rectifier circuit (a) circuit diagram

Published:2014/2/16 21:25:00 Author: | Keyword: Double pressure rectifier circuit (a) circuit diagram,

Double pressure rectifier circuit (a) circuit diagram
  (View)

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MOS image sensor oscilloscope circuit diagram 2 a family

Published:2014/1/23 23:19:00 Author: | Keyword: MOS image sensor oscilloscope circuit diagram 2 a family,

MOS image sensor oscilloscope circuit diagram 2 a family
MOS image sensor oscilloscope circuit diagram 2 a family   (View)

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MOS image sensor oscilloscope circuit diagram 3 a family

Published:2014/1/23 23:17:00 Author: | Keyword: MOS image sensor oscilloscope circuit diagram 3 a family,

MOS image sensor oscilloscope circuit diagram 3 a family
MOS image sensor oscilloscope circuit diagram 3 a family   (View)

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1024 CCD drive circuit diagram

Published:2014/1/23 23:12:00 Author: | Keyword: 1024 CCD drive circuit diagram,

1024 CCD drive circuit diagram
1024 CCD drive circuit diagram   (View)

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A circuit diagram can show through the direction of the grating

Published:2014/1/22 20:29:00 Author: | Keyword: A circuit diagram can show through the direction of the grating,

A circuit diagram can show through the direction of the grating
A circuit diagram can show through the direction of the grating   (View)

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Using the Schmitt trigger circuit diagram of grating

Published:2014/1/22 20:26:00 Author: | Keyword: Using the Schmitt trigger circuit diagram of grating,

Using the Schmitt trigger circuit diagram of grating
Using the Schmitt trigger circuit diagram of grating   (View)

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The digital circuit using grating circuit diagram

Published:2014/1/22 20:17:00 Author: | Keyword: The digital circuit using grating circuit diagram,

The digital circuit using grating circuit diagram
The digital circuit using grating circuit diagram   (View)

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Rapid grating circuit diagram

Published:2014/1/22 20:15:00 Author: | Keyword: Rapid grating circuit diagram,

Rapid grating circuit diagram
Rapid grating circuit diagram   (View)

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Perforated tape samples with grating circuit diagram

Published:2014/1/22 20:11:00 Author: | Keyword: Perforated tape samples with grating circuit diagram

Perforated tape samples with grating circuit diagram
Perforated tape samples with grating circuit diagram   (View)

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Light type pulse tester circuit diagram

Published:2014/1/13 18:32:00 Author: | Keyword: Light type pulse tester circuit diagram

Light type pulse tester circuit diagram
Light type pulse tester circuit diagram   (View)

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Grating pulse control circuit diagram

Published:2014/1/8 19:44:00 Author: | Keyword: Grating pulse control circuit diagram,

Grating pulse control circuit diagram
Grating pulse control circuit diagram   (View)

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Have inhibition of 50 hz for the optical amplifier circuit diagram

Published:2014/1/7 19:57:00 Author: | Keyword: Have inhibition of 50 hz for the optical amplifier circuit diagram,

Have inhibition of 50 hz for the optical amplifier circuit diagram
Have inhibition of 50 hz for the optical amplifier circuit diagram   (View)

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Backup Light

Published:2013/9/22 19:55:00 Author:lynne | Keyword: Backup Light

Backup Light
In series with La1 is the Tri2 triac. R3 and C2 form a network delay. As soon as the voltage on C2 is increasing over 30 V, the diac D2 will start to conduct and this will trigger Tri2 resulting in the lighting of La1. The command circuit of La2 is in parallel with the one for La1 but because R2-C1 has a double timing compared to R3-C2 the firing of Tri1 won’t happen when Tri2 conducts. If La1 is burned out then there is voltage on both RC networks, through La2 and R1 and so the Tri2 will be triggered first but because its current is lower than the holding current it will stop conducting almost immediately. In this situation C1 will continue to charge and shortly Tri1 will trigger. Because the time constant for La2 is a little higher than the one of La1, then the La2 light intensity will be a little lower. If you want that both light intensity to be the same then choose La1 with a higher nominal power. Without heatsinks the triacs can outstand powers up to 100 W each, and with heatsinks up to 1000 W. It is not indicated to use light bulbs with power less than 25 W because it might flicker.   (View)

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