There are many types of voltage-to-current and current-to-voltage converter circuits, and most of them use a combination of opamps and transistors to achieve a high level of accuracy. But when high accuracy isn’t necessary, a simple converter of this type can be made using just one or two resistors. Resistor as Voltage to Current Converter […]
Simple
Simple Intercom Circuit [2 way]
The article presented below describes a very simple intercom system which can be built and installed at any required place very cheaply. The circuit utilizes just a single IC and a very few other components for the entire assembly. How it Works If you are looking for a simple and low cost intercom system for home installation, […]
3 Simple Solar Panel/Mains Changeover Circuits
The discussed automatic change over relay circuit was requested by Mr.Karimulla Baig. The circuit normally charges the connected battery at constant current through the power received from the solar panel, and reverts to DC power from an AC/DC adapter in the absence of solar energy (during night time). Let’s the read the request in more details: Technical […]
5 Simple Alarm Circuits for Protecting your Home/Office from Theft
The following article discusses a few very simple intrusion detector circuits, or ant-theft alarms. The presented designs are easy to build yet extremely effective with the functions. How the Circuits Works An intruder alarm basically consists of a sensor and a trigger stages, which work together to produce the required detection. The sensor detects the presence […]
3 Simple DC UPS Circuits for Modem/Router
In the following article I have explained 3 useful DC to DC uninterruptible power supply circuits or DC UPS circuits for low DC to DC uninterruptible power applications The first idea below presents a DC UPS circuit can be used for providing back up power to modems or routers during mains failures, so that the broadband/WiFi […]
Simple Pneumatic Timer Circuit
In this article I have explained a simple two step IC 555 timer circuit which can be used for sequentially operating any specified industrial mechanism system, in this application it’s used for operating a pressurized pneumatic ball throwing arm. The idea was requested by Mr. Ray Strong. Technical Specifications So glad I found this site, […]