4502 (1:1) Thyristor Trigger Isolation Pulse Transformer is a small 1:1 pulse transformer.

The pulse transformer is cased in a plastic shell and has a ratio of 1:1 i.e. it has one primary coil & one secondary coil. This is the simple transformer for coupling input to one single output. 4502 Pulse Transformer has four legs where two legs act as primary and the other two act as secondary.

Pulse transformers for some applications also gate transformers gate drive transformers trigger transformers or wide-band transformers or signal transformers is a type of transformer optimized and designed for the transmission of voltage pulses between its windings and into the load. A pulse transformer is used to provide isolation in applications where small bursts of rectangular pulses are needed.

Pulse transformers can be used for signal transmission, low-power control circuits, camera flashes, radar systems, high-power switched-mode power supplies, and other fields where the pulsed form of relatively high voltage along with isolation is required.