A Spark Gap with Trigger Wire

By
Robert B. Topolski

3552 Camino Rojos
Palm Springs
CA 92262

The drawing below is of a spark gap utilizing several components for obtaining the longest spark for a given input voltage: (1) A trigger-wire, (2) a center electrode with slight capacitance for smoother operation, and (3) a capacitance for quenching.

This project is a lot easier to construct than the quenched gap and is easier to adjust and maintain. It can be designed for higher power handling capability by using larger electrodes, lugs, and screws. The voltage rating may be increased by increasing the voltage rating of the capacitors. The spark gap can be tuned to optimum results by varying the value of the capacitance of the capacitors.

I would appreciate hearing from anyone who builds this project or has any questions about it.

Emblem

The 1985 subscription includes a bonus in the form of an emblem. It can be ironed on a shirt, jacket, or other suitable garment. After applying, it is best to add a few stiches of thread as the glue may not hold in cases of rough wear. The emblem is of the silk screen type and should be washed in warm water & mild detergent. Do not use a bleach.

Several members recently suggested that TCBA make available caps with the TCBA logo attached. An effective alternative is to purchase a cap, preferably blue, and iron on an emblem. Looks neat! WEAR YOUR EMBLEM PROUDLY!