This typical multivibrator configuration was found in Radio Craft of May 1948. The frequency which depends on the capacitors is between 100 and 1000 kHz. The power supply must be made with voltages between 150 and 300 V.

This typical multivibrator configuration was found in Radio Craft of May 1948. The frequency which depends on the capacitors is between 100 and 1000 kHz. The power supply must be made with voltages between 150 and 300 V.