Photomultiplier tube trigger (CB8868E)

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

1 MHz XTAL Oscillator (CB226E)
This configuration using a CMOS IC produces a 1 MHz signal. The circuit can be used as clock in...
Pressure change alarm (CB22352E)
This circuit was obtained from an English documentation from 1995. The operational amplifier has...
Electronic Dice (CB4877E)
This TTL dice was found in an old American 1980s documentation, but can still be easily assembled....