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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.

uPC1280V POWER AMPLIFIER Circuit 20W

uPC1280V POWER AMPLIFIER Circuit 20W uPC1280V, NEC Electronics, Audio Power Amplifier and Power triode intended for use in class A

RELAY driver CIRCUIT

RELAY driver CIRCUIT WITH OPTICAL ISOLATION using PMV30UN

Tips 1996 Volvo 850 Wiring Diagrams

The tips following wiring diagrams apply for 1996 Volvo 850 series. Herein you will find detail specification, description and illustration of Volvo 859 Central electrical unit (includes fuses, relays, and connection on rails), ignition switch, cable harness and connectors, routing of cable harness in the car, branching points, electrical distribution unit, and ground points. Here […]

RF preamp Circuits

RF preamp Circuits using CD4007. RF Preamp properly tune CD4007 Audio Preamplifier Circuits and Design Guidelines for Bipolar

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