Opto control for triac (CB20552E)

Found a documentation for PC from 1992, this circuit is indicated for the English power grid of 240 V.

Operational Amplifiers Test (CB1500E )
We found this circuit in a 1977 publication. With it we can test general purpose operational...
Positive Line Current Monitor (CB5245E)
This circuit is found in a 2005 Linear Technology application manual. The circuit monitors the High...
Divider by 10 (CB5180E)
This frequency divider by 10 uses discrete components only. Modern equivalent components can be used as...