This circuit is from a 60's documentation. The capacitance C1 can be between 20 pF and 0.01 uF depending on the generated frequency. Equivalent transistors may be employed.
This circuit was found in 90s Radio Electronics. The transistor can be any general purpose....
This circuit uses a voltage comparator and can produce signals up to 20 MHz. The resistors R are...
This high frequency pulse generator was found in an old American documentation. The circuit makes use...