This circuit, found in EDN documentation from the 90's, implements a clamp without signal deformation. The integrated circuit is from that time, uncommon nowadays.
This circuit uses a FET to drive an LED with constante currente. The current up to 20 mA can be...
This circuit was found in a 1999 publication. Its purpose is to flash two LEDs according to the...
With this voltmeter with high input resistance, voltages from 10 mV to 50 V. can be measured. FETs...