Analog Digital Values Indicator (CB14702E)

We found this TTL circuit in a Texas Instruments optoelectronics manual. The power is 5 V and the LEDs are common.

| Clique na imagem para ampliar |

DC controlled AC switch (CB6923E)
Found in an Electronic Design from 1965, this circuit makes use of transistors of the time. The...
Sound switch or Vox (CB9215E)
Found in an EDN from the 90s, this circuit uses an electret microphone. The output can be used to...
Relative Value Comparator (CB19483E)
This circuit compares the input voltages by providing an output according to the curve next to the...