Published:2011/3/31 1:05:00 Author:Jessie | Keyword: DC amplifier, NPN and PNP transistors
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Published:2011/3/29 21:25:00 Author:Jessie | Keyword: Gas burner, flameout alarm
Figure 1 circuit is another kind of gas burner flameout alarm. After the gas burner normal burning, closing the power switch K. Because photoconductive resistance LDR is intenseirradiated , its value is very small, transistor BG1 and BG2 connected, relay J suck close, its closed contacts J - 1 disconnected, music integrated block IC has no sound. But once the gas burner stall, light irradiation abated, its value increases, BG1 and BG2 stop, relay J released, J - 1 closed, the power automatically connected, IC works, the speaker Y music warning issued, remind master promptly shutting gas valve.
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Published:2011/4/11 3:07:00 Author:Nicole | Keyword: triode drive, DC motor
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Published:2011/4/11 2:45:00 Author:Nicole | Keyword: thyristor, stepless voltage regulator
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Published:2011/4/1 3:35:00 Author:Nicole | Keyword: Alarm lamp, relay
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Published:2011/4/1 3:34:00 Author:Nicole | Keyword: switch tube
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Published:2011/4/1 3:34:00 Author:Nicole | Keyword: gate circuit drive, dynatron drive, transformer drive
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Published:2011/4/1 3:34:00 Author:Nicole | Keyword: Self-motivated motor drive
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Published:2011/4/1 3:33:00 Author:Nicole | Keyword: micro-motor, main drive
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Published:2011/4/11 1:44:00 Author:Rebekka | Keyword: car alarm
Here is the schematic diagram of the Car alarm circuit:
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Published:2011/4/10 22:29:00 Author:muriel | Keyword: MCLR connection manual button switch
MCLR connection manual button switch circuit diagram as shown
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Published:2011/4/11 2:16:00 Author:Jessie | Keyword: Operation amplifier, high-pass filter
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Published:2011/4/11 2:15:00 Author:Jessie | Keyword: alarm system
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Published:2011/4/11 2:10:00 Author:Jessie | Keyword: Computing single op-amp
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Published:2011/4/11 1:04:00 Author:Jessie | Keyword: audio power amplifier
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Published:2011/4/11 0:58:00 Author:Jessie | Keyword: Load drive multiplier
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Published:2011/4/10 22:50:00 Author:Jessie | Keyword: multiplication
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Published:2011/4/10 22:49:00 Author:Jessie | Keyword: Power audio oscillator
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Published:2011/4/10 21:53:00 Author:Jessie | Keyword: charging department
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Published:2011/4/10 21:51:00 Author:Jessie | Keyword: computer control leveling
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