We will try the PIC microcontroller 2 led flasher circuit using PIC16F627.
Because like this circuit Which we can set ON-OFF of both LEDs for easy, long and accurate.
This non-contact ac voltage detector circuit, using digital IC CD4060 as main components and resistor and LED display only. it is use 9V battery as power supply.
Simple crystal oscillator 1-10MHz using inverter gate
This Simple Crystal oscillator Circuit using 74LS04 that provided square wave of 1MHz to 10MHz, Use inverter gate IC and control frequencies with crystal [...]
Increasing current gain of transistor relay driver
How to control a load with a digital circuit like Arduino? A transistor relay circuit may be answered for you. The output pulse from the digital circuit to biased the…
Normal multimeter cannot check it. This circuit can help you.