This circuit can work with almost any JFET. The circuit is from an Electronics Now from April 1993. It is powered by a 12 V battery, but can also be powered by 9 V.
This circuit can be used in a single optical link or optical communication system and even using an...
This current meter with many scales was found in a 80s American documentation. The operational amplifier...
Large-surface diodes and even neon lamps can function as radiation sensors. The circuit shown in...