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Power Delay On-Off with LDR

Power Delay On-Off with LDR using 1N4004, BC548, Relay, LDR

On Off Touch Switch Circuit with Photo Transistor

On Off Touch Switch Circuit with Photo Transistor using 40106B

DC to DC converter step up 9V-15V 3A

DC to DC converter step up 9V-15V 3A

Wireless Systems Using Aurel RX FM

Portable PA System with Wireless Microphone using wireless systems circuit diagram Component 1: R1 100 Ω        C1 100 µF 25V     D1 1N4007 R2 5.6 kΩ       C2 10 µF 16V        T1 BC547 R3 470 kΩ     C3 220 nF              U1 Aurel TX FM […]

Electronic Circuit Design

Electronic Circuit Design with CD4093 All circuitry is intended for fun activities Electronic Circuit Design, and can be installed at home, battery-powered cars and motorcycles, but also on the page.

Free Download TDA7294 IC Second Voice recorder module and Service Manual free download, schematics, datasheets, eeprom bins, pcb

Free Download PDF TDA7294 IC Second Voice recorder module and Service Manual free download, schematics, datasheets, eeprom bins, pcb TDA7294 IC Second Voice Recorder Module. Non-volatile multi message recorder using ISD chips. Just change one resistor for longer duration. Standalone operation using just six onboard bottons. Record via built-in microphone or external line in. Speaker […]

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