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| هندسة الالكترونيات ................ بإشراف : م.الـحـربي |
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LinkBack | أدوات الموضوع |
التقييم: 
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06-04-2007, 05:09 AM
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This circuit uses a UM3561 IC to produce four different sound effects.
 
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06-04-2007, 05:11 AM
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A simple test circuit to fault find audio and radio equipment. Can be used to inject a square wave signal, rich in harmonics, or used with headphones as an audio tracer.
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06-04-2007, 05:13 AM
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A simple device to indicate various levels of hot water in a tank.
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06-04-2007, 05:14 AM
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output to 5 VDC.
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06-04-2007, 05:16 AM
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battery life.
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06-04-2007, 05:17 AM
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DC motor reversing circuit using non latching push button switches. Relays control forward, stop and reverse action, and the motor cannot be switched from forward to reverse unless the stop switch is pressed first.
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06-04-2007, 05:19 AM
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 This tester is designed to locate stray electromagnetic (EM) fields. It will easily detect both audio and RF signals up to frequencies of around 100kHz. Note, however that this circuit is NOT a metal detector, but will detect metal wiring if it conducting ac current. Frequency response is from 50Hz to about 100kHz gain being rolled off by the 150p capacitor, the gain of the op-amp and input capacitance of the probe cable. Stereo headphones may be used to monitor audio frequencies at the socket, SK1
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06-04-2007, 05:24 AM
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A basic regulated 12 Volt power supply
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06-04-2007, 05:25 AM
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thermometer.
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06-04-2007, 05:26 AM
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This circuit will activate a relay when light falls to a preset level. Light level can be adjusted with VR1 and the relay contacts may be used to operate an external light or buzzer.
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06-04-2007, 05:29 AM
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site.  TV Transmitter
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06-04-2007, 05:31 AM
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:  Water Activated Relay
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06-04-2007, 05:39 AM
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 FOR SALE
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06-04-2007, 05:48 AM
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Schematic
 Telephone Hold Button
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06-04-2007, 05:53 AM
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FM Telephone Bug
Schematic 
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| مواقع النشر (المفضلة) |
| أدوات الموضوع | |
| تقييم هذا الموضوع | |
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