4017 circuits - related electronic projects and circuit diagrams (schematics), this helps you finding desired informations and facilitates your site navigation through all articles database. In every website page you will find a special section (at the beginning or the end) with tags just like this and also different tags associated with the current article. Tags inter-links stories with related 4017 articles.
This is the circuit of a very sensitive clap switch. It switches ON/OFF a White LED or electrical appliances through claps. The circuit can sense the sound of claps from a distance of 1-2 meters.
This circuit is used to simulate the police car lights by alternating flashing strobes seen on British police cars. The IC1a forms a square wave oscillator having adjustable frequency with VR1 to give the best effect.
This Toggle Switch uses the popular Johnson Decade counter IC CD4017.By giving positive pulses to its clock input, the ten outputs of the IC becomes high one by one provided the reset pin is grounded. By connecting the reset pin to any of the output, IC latches and the output remains high irrespective of the clock pulses. This toggle action can be exploited in various relay driver circuits.
This Power On Indicator circuit is highly useful to detect the presence of AC in Mains powered instruments such as Lab equipments and battery chargers which are to be switched on continuously. This Non Contact Power Monitor lights an LED when current starts to flow through the power cord of the instrument.
