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How to Use a Trigger Transformer in a Circuit

A trigger transformer acts like any other electronic transformer, transferring electrical current between two circuits through inductively coupled conductors. The trigger transformer differs from other transformers by using a pair of linked capacitors with different sizes. Once these two capacitors fill to capacity, the transformer unleashes its charge for a brief instant. It then waits for the next trigger. This intermittent action serves as the basis for such applications as blinking neon signs and camera flashbulbs.

Things You'll Need

Trigger transformer
Solder
Soldering paste
Soldering ion

Instructions

- 1
  Determine the optimal position for the trigger transformer. The trigger transformer must occupy a space between the main circuit and that portion of the circuit needing to be triggered. In cases when a gas needs to be heated, such as in a neon sign, insert the triggering transformer between the power supply and the bulb's filament.
- 2
  Apply solder paste to the triggering transformer's two negative terminals. Solder one of these terminal pins to the first circuit's ground line. Solder the other negative terminal pin to the second circuit's ground line.
- 3
  Apply solder paste to the trigger transformer's two positive terminals. Solder one of these terminal pins to the positive through line in the first circuit. Solder the other terminal pin to the second circuit's positive through line. In the case of a camera flashbulb, one positive terminal will be connected to the power supply circuit, so the transformer receives charge. The second terminal will be connected to the flash tube, where the triggered charge makes the flash light up.
- 4
  Activate the circuit to test the triggering transformer's performance.

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