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Posts tagged control

Make Auto-Fan, 741 AutoScout temperature control – More circuit Temperature Control

Make Auto-Fan, 741 automatic temperature control – More circuit Temperature Control

Making RF Meter 2.4 GHz Wave Antenna

RF Meter circuit 2.4 GHz Wave Antenna using  LM324 RF Field Strength Meter detects Accuracy in the FM, TV and cell tower frequency range 30 MHz – 2.4 GHz

Power Supply and Mute Control Circuit

Power Supply and Mute Control Circuit using 7815 and 7915 , BC549 , Relay

TTL RS232 driver circuit and Protect the PC from direct connection to hazardous voltages

TTL RS232 driver circuit. TTL driver circuit consists of 2 transistors and a few other passive components, a negative voltage for RS232 logic generated by the capacitor C7. TTL to RS232 driver circuit and a variable voltage output driver has a parallel termination impedance to match cable and TTL driver circuit, and provides the best […]

Intercom switch circuit

Intercom switch circuit Intercom switch circuit Two line intercom plus a telephone changeover switch Click here for the circuit diagram. The circuit presented here can be used for connecting, The circuit presented here can be used for connecting two telephones in parallel

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