Electrolytic capacitors are unnecessary to generate a 1 cps frequency. As an scs triggers on, the 0.2 ÂµÂ¥ commutating capacitor turns off the other one and charges its gate capacitor to a negative potential. The gate capacitor charges towards 24 volts through 20 retriggering its scs. Battery power is delivered to the load with 88% efficiency.
The 20 resistors can be varied to change prf or duty factor.