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Posts tagged LM3622

USB charger battery

USB charger battery USB charger schematic diagram for li-on battery using LM3525, LM3622, DTA1432KA USB port is a great power source for charging a single cell li-on battery. … cell li-on battery charger. LM3525, LM3622, DTA1432KA is used as the controller.

Active Studio Monitor Speakers

Radio TelePhone for Active Studio Monitor Speakers using SA6128N, UA747, BF960

Telephone Circuits

Telephone Circuits

Circuit Diagram Converter trigger signal causes the 555 to discharge the capacitor for synchronization

LM1881 is used to do all the grunt work of separating the sync signals from the composite video. The chip provides the vertical sync on pin 3 for the vertical oscillator, and composite sync on pin 1 for the horizontal oscillator. The intensity signal comes from the composite video signal itself, but is negative. I […]

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.

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