Flat response amplifier CIR16474S CB9390E (CB9390E)

This circuit was found in a 1970s documentation. The integrated circuit used is uncommon today.

High Impedance Amplifier (CB889E)
This two-stage amplifier hás a high impedance input and excelent voltage gain. It can be used as a...
Shutdown Indicator (CB16282E)
An interesting circuit suggested to indicate when a device is turned off. In the figure we have...
Logic probe (CB22142E)
This simple circuit indicates the logic level of a TTL output. The resistors can be 1k and the...