Posts Tagged ‘flasher’:

2024-03-09 Big Clive’s Old Tungsten Roadwork Beacon – Barricade Flasher

I built this “tungsten roadwork beacon” as Clive calls it, using the parts given in my schematic (photo below). I didn’t have a 6V, 90 mA lamp, so I simulated it by using three 20 ohm, 1/4 Watt resistors in series, which gives 60 ohms and 100 mA load with 6VDC.  For an indicator I

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2012-09-13 JT Blinker Using Single Winding Coil

I was discussing with Aki (theledart.com) his JT blinker, which uses a single winding coil, two transistors for the “JT” V booster, and two transistors in an astable multivibrator to blink the “JT”.  He asked me to include the schematic. The first circuit boards that I had made from ExpressPCB.com used an astable multivibrator.  I

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