This circuit of an old medical publication makes use of an integrated circuit of the time, uncommon in our times. The sensors are diodes.
We found this circuit in a Texas Instruments documentation from the 80s. The circuit uses simple...
This oscillator provides a sinusoidal signal and can be applied to other operational amplifiers. The...
This circuit was found in a 90s Popular Electronics. Both the coupler and the MOSFET can be of any...