This circuit was found in a 1967 Electronics World. We can design it with a BF245 for the FET and a BC558 for the bipolar transistor. The circuit has 3 scales and a 10 M ohm input resistance.
This current source was obtained from an 80's operating manual. The circuit can be applied to modern...
The dsPIC33EP128GS808 Digital Signal Controller Family now Offers up to 128 KB of Flash while...
The circuit shown in the figure consists of a phase shift oscillator and its components have been...