flasher and lighting control circuits

Posted on Feb 6, 2014

Hobby Servo`s Turn DMX signals into mechanical motion. Generally hobby servo`s require a pulse having a variable width from 1 to 2 milli seconds, with 1. 5mSec as the center position. The schematic below is a simple voltage to pulse width circuit. This is a simple O`scope trigger circuit for checking DMX signals. It is based on a 4528 CMOS monostable multivibrator. The `trigger`

flasher and lighting control circuits
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pot is adjusted first, untill a short pulse is generated near the end of the "BREAK" portion of the DMX signal. Then adjust the "delay" pot to zoom in on a portion of the signal. On DMX signals with few channels it works to trig the scope on the "trig" output, rather than the "delay" output. This little circuit can be used to dim lights up to about 350 watts. It uses a simple, standard TRIAC circuit that, in my expirience, generates very little heat. Please note that this circuit cannot be used with fluorescent lights. Schematic is avialable here find in links, A number of people have been unable to find the transformer needed for the Black Light project, so I looked around to see if I could find a fluorescent lamp driver that does not require any special components. It uses a normal 120 to 6V stepdown transformer in reverse to step 12V to about 350V to drive a lamp without the need to warm the filaments. Q1 must be installed on a heat sink. A 240V to 10V transformer will work better then the one in the parts list. The problem is that they are hard to find. This circuit can give a nasty shock. Be careful around the output leads. Disco anyone Actually, this strobe serves a much more useful purpose then making it look cool when you dance in the dark. You can use it to view fast moving objects, look for craks in PC boards (hold the strobe on the trace side of the board and look from the component side), and it is a great...

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