Found in Philips documentation from 1968 this circuit operates at frequencies up to 10 MHz with 76 dB gain. The double transistor can be replaced by a matched pair.
We found this circuit in a 1968 Electronics World. The transistors are from the era and...
There are several manufacturers of the integrated circuit used and it also admits equivalents. The circuit...
This circuit is from 1971 American documentation. Transistors are still common except for 2N2060...