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Electric Circuit Diagram light flash using NE555 and 2N3055

Electric Circuit Diagram light flash using NE555 and 2N3055 Circuit Diagram uses a 555 timer IC working as an astable multivibrator. The flashing rate can be varied from very fast to a maximum of once in 1.5 sec by varying the preset VR1.

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

Alarm system circuit Diagram

Schematic Circuit Diagram Security Alarm system circuit Diagram using LM358, 4093B, 2N7000, TLC106C, MTP3055E, 1N4004, BC558, 1N5400 Security alarm system circuit Diagram using LM358, 4093B, 2N7000, TLC106C, MTP3055E, 1N4004, BC558, 1N5400

4 channel audio splitter / Audio Distribution Amplifier 4558

The three channel output distribution amplifier uses 4558. The first stage is resistor coupled with a 33k.… Each output stage independently drives an amplifier through the 50 µF output capacitor to the 4k7 kΩ load resistor. Audio Distribution Amplifier using 4558 4 channel audio splitter layout/ Audio Distribution Amplifier 4558

uPC1032H circuit

preamp mic schematic using uPC1032H R101,201,9 ………… 100 R102,202 ………….. 1K R103,203 ………….. 1K R104,204 ………….. 82 R105,205 ………….. 15O R106,206 ………….. 1K R107,207 ………….. 2K R108,208 ………….. 4K R10 ………………. 10R VR ……………….. B50K Stereo C101,201 ………….. 1nF C102,202,106,206 …… 10uF/16V C103,203,113,213 …… 22uF/16V C104,204 ………….. 39nF C105,205 ………….. 1,5nF C7,9,11 …………… 100nF C8,10,12 […]

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

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