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Archives for October, 2009

Introduction to PCB Manufacture for Hobby

Introduction to PCB Manufacture for Hobby

Making inverter technology for Car

Making inverter technology for Car Inverter is a series of functions to change the dc voltage into ac voltage. One of the purposes inverter that is popular enough to raise the dc voltage of 12 to be 220 Vac. after the change in voltage from 12 Vdc into 12 Vac, and the increase in the […]

Engine Wiring Harness – Automotive Wiring and Electrical Systems

Engine Wiring Harness – Automotive Wiring and Electrical Systems

3W Audio Amplifier Circuit using TDA7057Q

3W Audio Amplifier Circuit using TDA7057Q

Stereo Power Amplifier

68W Power Amplifier schematic   68W Stereo Power Amplifier using TR A673, C828, C1213, D438, B560, TIP31 and TIP32

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 Circuit Using STK460

Audio Amplifier Circuit Using STK460

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