AC millivoltmeter (CB21862E)

This circuit is from a 1974 Ferranti transistor manual. The circuit is analog, and the components used are period types.

Fast Recovery 741 Integrator (CB13749E)
This circuit was obtained in a 1970 engineering documentation. The operational is the 741, but...
Monostable Using the 4528 (II) (CB133E)
A version of a monostable that uses the 4528, but is triggered by negative transitions of the...
VCO 4046 (CB15464E)
The CMOS 4046 integrated circuit is seldom used, both due to the difficulty of finding it and the...