In this post I will show how to construct a general purpose password based electronic lock circuit without any involvement of microcontroller. You can use this circuit for numerous applications where a basic level of security is required for turning a circuit ON. The proposed project is built using an IC 4017 and the circuit […]
Newly Updated Circuit Projects:
Simple Vertical Axis Wind Turbine Generator Circuit
In this post I have explained a simple vertical axis wind turbine generator circuit using ready made high power generator dynamo and a vertical axis wind turbine mechanism. The idea was requested by Mr. Taibani. Circuit Objectives and Requirements Hope you’re doing well. Firstly thanks for all the great knowledge & information you have given […]
Inverter Voltage Drop Issue – How to Solve
Whenever PWM is employed in an inverter for enabling a sine wave output, inverter voltage drop becomes a major issue, especially if the parameters are not calculated correctly. In this website you might have come across many sine wave and pure sine wave inverter concepts using PWM feeds or SPWM integrations. Although the concept works […]
SPDT Solid State DC Relay Circuit using MOSFET
In this post we’ll study a simple high current mosfet based SPDT DC relay, which can be used in place conventional bulky SPDT mechanical relays. The idea was requested by Mr. Abu-Hafss. Working Concept A simple high current SPDT solid state DC relay or a DC SSR can be constructed using a couple of mosfets […]
Visible Light Communication Circuit [using InfraRed]
You can use this simple visible light communication circuit to send audio and digital information through infrared light, beyond a mile away, with extreme precision. By Sunil Rao The main features of the light communicator circuit can be understood with the following points: Output power = 5 millwatts Frequency Modulation Operation with 50 kHz carrier […]
Solar Charge Controller for 100 Ah Battery
This comprehensive solar charge controller is designed to effectively charge a big 12 V 100 Ah battery with utmost efficiency. The solar charger is practically foolproof in terms of battery over charge, load short circuit, or over current conditions. By Vismit Singh The key elements of this 100 Ah solar regulator circuit are, obviously the […]