This circuit was obtained from a Philips documentation from 1968. The transistors can be replaced with equivalents, only with care so that the doubles are exchanged for matched pairs.
This circuit was found in an American documentation from 1969. It serves to trigger circuits by...
This input stage has unit gain but a high input impedance and low output impedance. The circuit is...
The circuit presented was found in the Linear Applications Handbook of the National Semiconductor of 1994....