LED Stroboscope

Maintains constant brightness at all flash rates

The rotary switch is available for $5.00USD as of 2003 from DigiKey under part number EG1951-ND or EG1952-ND. It is a real pain to operate this circuit without a proper switch. You can put multiple 4017 ring counters in series to reduce the duty cycle in order to obtain a more focussed strobe image but you will have to increase LED current to maintain the same level of brightness and that will shorten LED life. This circuit can be improved a bit by using a more stable STROBE RATE oscillator or by using a regulator to power the oscillator and associated logic. If you do this you should switch to 74HC class devices.

LED Strobe Light - Maintains constant brightness

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