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Posts tagged broadband

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.

Mini Guitar Amp circuit using TDA7052

Mini Guitar Amp circuit using TDA7052 R1    22K C1    10µF  25V C2    100nF  63V C3    220µF  25V IC1   TDA7052 SPKR    8 Ohm  Loudspeaker B1            9V, 3V  Battery

Relay Driver Circuit for Switches

Relay Driver Circuit for Switches using ZVP4106

ALL ELECTRONICS

ELECTRONIC CIRCUIT and ELECTRICAL WIRING

Determining the optimum PCB layout

One of the keys in determining the optimum printed circuit board layout is to understand how and where the signal return currents actually flow,  Most designers only think about where the signal current flows  and ignore the path taken by the return current. we must understand how the high frequency current flows in a conductor. […]

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