Photomultiplier tube trigger (CB8868E)

We found this circuit in a 1970’s Philips documentation. The circuit uses components from that time.

Low Impedance Preamplifier (CB848E)
This circuit can operate with 5 uV to 1 mV input signals from low impedance sources such as...
Basic lock for triac (CB7244E)
This circuit was found in General Electric documentation from 1966. The circuit is suitable for any...
Opto isolator CMOS Interface (CB13780E)
This circuit is from a Motorola manual from the 70s. The circuit can be implemented with more...