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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.

STK Power Amplifier Circuit

STK Power Amplifier Circuit STK4192II Power Amplifier Circuit STK Power Amplifier Circuit This design is based on the 50 Watt Audio Amplifier, and was developed mainly to satisfy the requests of correspondents unable to locate the STK4192II STK Power Amplifier Circuit

STK439 Circuit

Audio Amplifier Circuit Using STK439

TDA1175P – LOW-NOISE TV VERTICAL DEFLECTION SYSTEM

TDA1175P – LOW-NOISE TV VERTICAL DEFLECTION SYSTEM It is intended for use in black and white and colour TV receivers. The functions incorporated are : synchronization vertical circuit, oscillator and ramp generator.  

simple Timing circuit

simple Timing circuit using 2N6027 How do you build a simple timer circuit ? X 2N6027X A Simple Timing CircuitX adjustable timing circuitX electronic timing circuitX engineer 2N6027X How do you build a simple timer circuitX hyristor switch circuitX Programmable Unijunction TransistorX PUT Flasher Circuit SchematicX Security Light & Switch with PIRX Semiconductor 2N6027X Silicon-Controlled SwitchX simple clock circuitX Simple Delay Timer Circuits ExplainedX simple Timing circuitX simple Timing circuit 2N6027X Super […]

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