Found in a 1969 Ferranti documentation, this circuit uses only bipolar transistors from that time. Transistors can be replaced with modern equivalents.
The sensors in this circuit are NTCs and PTCs that work in a differential way by directly...
We found this circuit in a 90's Radio Electronics. The circuit can still be easily assembled as all...
Found in a 90s Electronic Design, this circuit rectifies sinusoidal signals providing output as...