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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.

audio amplifier class d

audio amplifier class d audio amplifier class d Using KA2213 audio amplifier class d audio amplifier class d

Schematic for BLF369 BLF369 BLF369

Schematic for BLF369 BLF369 BLF369 Schematic for BLF369 BLF369 BLF369

circuit components

circuit components circuit components using KA2209 circuit components circuit components

Inverter circuit diagram

Inverter circuit diagram using 555 Your project is to design and build a power inverter to convert 12 volts DC to 120 volts AC.  A suggested circuit  is  shown  here Please  note  that  this  is  only  a  general  schematic,  and  may  not  be  exactly  what  you  need  to  build  in order  to  have  a successful  […]

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