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Light-Activated Trigger - Delay Unit Package, unassembled
This package includes the parts to build a light-activated trigger with an electronic delay unit. There is a $1.00 discount from the price of both kits purchased separately. There is an additional $1.00 discount for purchasing the combination with a breadboard.
This trigger operates the reverse of our photogate kits. The output of the light-activated trigger is switched on when light shines on the detector. A laser pointer works particularly well as a light source, since the phototransistor is sensitive to visible light and has a narrow angle of view. You can also use this circuit to trigger a slave flash in response to the discharge of a master flash.
A 9-V battery or AC/DC Adapter is required to power the circuit.
A cord is required to trigger a flash unit. Click here for trigger cord options.
The kit includes an additional 3 feet of 2-conductor cable that can be used to extend the phototransistor away from the breadboard.
When built on a breadboard, the completed circuit will look similar to that shown above. Click on the photo for a larger view. For descriptions of the individual light-activated trigger and delay unit kits, go to these links:
You can purchase this kit assembled.
Click here for more information or below to order.