Voltage Indicator (CB19863E)

The circuit shown indicates voltages from 10 to 14 V used to monitor automotive voltage. One or two LEDs light up depending on the voltage.

| Clique na imagem para ampliar |

Emitter Follower (CB6155E)
This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose...
NEC RMT200 Tape Recorder (CB18495E)
This is the circuit of the commercial NEC RMT-200 recorder obtained in a Japanese documentation from 1968....
Negative Differentiator LM3900 (CB5055E)
The output voltage of the circuit shown in the figure is approximately 7.0 V for a 15 V supply...