This circuit is from a 1965 Electronic Design. The transistors may be general purpose and the power supply must be symmetrical.
The purpose of this circuit is to extend the range of frequency meters (typically up to 30 MHz) to...
This basic configuration of an astable multivibrator was found in a publication of the year 1968....
The frequency of TTL square signal is divide by 5 with this circuit. Power supply is 5 V and the...