Circuit Diagram Tester. Transistor tester schematic circuit diagram admin august 12 2018 0 122 1 minute read this tester is intended to quickly check whether a transistor is functional or not and possibly also select two or more transistors with approximately equal gains. We identified it from well behaved source.
The device is actually a simple led and a cell circuit where the led is made to switch by passing the cell voltage to the led via the conductor in. This crystal tester gives led light indicator. It is then rectified smoothed and stabilised to 100v by the string of zener diodes.
Inside the ic out of the four nand gates only three gates are used.
We have used different op amps in many circuits and developed a separated section for op amp circuits. Quiz which has been attempted 4604 times by avid quiz takers. Some manufacturers include an even simpler tester with a set of batteries consisting of a strip of plastic with a layer of some sort of electrically conductive material that changes color when a current grows through it. In this circuit we have used two leds for displaying the condition.