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Posts tagged LED Driver circuit

Led circuit – Power Supply

Led circuit – Power Supply Led circuit for the Power Supply using BD139 Power Supply circuit – 16VAC x 2 (ct) to 39v using ZD30v Led circuit for the Power Supply The size of the LED and resistor to supply some tips on supply, and of course will provide many details about the LED driver […]

Single Cell LED Driver using LT1932

Single Cell LED Driver circuit using LT1932

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200W Audio Amplifier Circuits

200W Audio Amplifier Circuit using STK4048 View post View post 200W Audio Amplifier Circuit using STK4048 View post

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.

Power adapter circuit

Power adapter circuit Power adapter circuit +9V using TIP31, BC182 Power adapter circuit Power adapter circuit

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