Equalizer Preamplifier (CB24709E)

This circuit was found in the July 1982 issue of Radio Electronics magazine. The integrated circuit is of a newly released type at the time.

| Clique na imagem para ampliar |

Photometer (CB17052E)
This simple Bargraph photometer with 4 LEDs was found in a 1997 documentation. The scale is...
Logic Probe with Memory (CB5909E)
This 7400 TTL circuit has a memory, keeping the LED on when a pulse is detected. The circuit must be...
Bilateral Current Source (CB14116E)
This constant current source was found in the Linear Applications Handbook of the National...