We found this circuit in a 1973 documentation. The null adjustment trimpot is 10k. The circuit can be powered by symmetrical sources from 9 V. The diodes on the bridge can be 1N4148.
This circuit with two operating modes was found in the September 1989 issue of Radio Electronics...
This TTL divider divide by 0 to 9 the frequency of a signal applied to its input. Maximum...
This circuit can be used for signaling a panel with a common incandescent lamp. The lamp will...