Calculator-stopwatch converter circuit
This circuit is suitable for any calculator with automatic constants that can be used as a stopwatch. The 555 timer is adjusted to the appropriate frequency and then connected to the calculator's battery and switch by pushing the switch.
Plastic Package Diode.Among the electronic components, a device having two electrodes allows only the current to flow in a single direction, and many uses apply its rectification function. The Varicap Diode is used as an electronic adjustable capacitor. Most of the diodes have a current directionality that we often call the "Rectifying" function. The most common function of a diode is to allow only current to pass in a single direction (referred to as forward bias) and block in the reverse direction (referred to as reverse bias). Therefore, the diode can be thought of as an electronic version of the check valve.
Plastic Package Diode,High Frequency Diode,High Voltage Avalanche Diode,Plastic Package Zener Diode
YANGZHOU POSITIONING TECH CO., LTD. , https://www.cnchipmicro.com