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New Circuit Projects

Solar Panel Voltage Regulator Circuit

Last Updated on November 20, 2023 by Swagatam 114 Comments

LM338

In this post I have explained how to construct a simple solar panel regulator controller circuit at home for charging small batteries such as 12V 7AH battery using small solar panel Using a Solar Panel We all know pretty well about solar panels and their functions. The basic functions of these amazing devices is to […]

Filed Under: Solar Controller Circuits Tagged With: Panel, Regulator, Solar, Voltage

Simple Solar Tracker System – Mechanism and Working

Last Updated on January 3, 2024 by Swagatam 88 Comments

solar tracker ldr assembly

The circuit and the mechanism I have explained in this article may be considered as the easiest and perfect dual axis solar tracker system. How the Dual Axis Solar Tracker Concept Works The device is able to track the daytime motion of the sun precisely and shift in the vertical axis accordingly. The device also […]

Filed Under: Solar Controller Circuits Tagged With: Mechanism, Simple, Solar, System, Tracker, Working

Make a Simplest Temperature Indicator Circuit

Last Updated on January 3, 2024 by Swagatam 20 Comments

SimpleTemperatureControllerCircuit

A very simple temperature indicator circuit can be built by interconnecting a single transistor, a diode and a few other passive components. Using Transistor as a Heat Sensor As we know that all semiconductors have this “bad habit” of changing its basic characteristics in response to ambient temperature changes. Especially basic electronic components like transistors […]

Filed Under: Indicator Circuits Tagged With: Indicator, Simplest, Temperature

433 MHz RF Remote Control Encoder and Decoder Pinouts Explained

Last Updated on November 10, 2023 by Swagatam 60 Comments

RFtransmitter

In this post I have explained the pinout assignments and functions of the popular 433 MHz RF remote control module from HOLTEK. RF 315 MHz / 433 MHz Transmitter-receiver Module for Remote Control Application Making your own universal remote control systems today is very easy. Such procure the relevant chips, assemble them and here goes, […]

Filed Under: Remote Control Circuits Tagged With: 433, Control, Decoder, Encoder, Remote, RF

Make a Workbench Multimeter With the IC 741

Last Updated on December 23, 2024 by Swagatam 29 Comments

1

Testing and troubleshooting electronic project circuits requires a multimeter, so new hobbyists may feel interested to try the following homemade multimeter circuits as their next electronic project. Using a Single Opamp 741 The few opamp based meter circuits such as Ohmmeter, voltmeter, ammeter are discussed below using the IC 741 and just a few other […]

Filed Under: Meters and Testers Tagged With: 741, Multimeter, Workbench

3 Accurate Refrigerator Thermostat Circuits – Electronic Solid-State

Last Updated on January 19, 2025 by Swagatam 31 Comments

1 4

Interested to make an accurate electronic thermostat for your refrigerator? The 3 unique solid state thermostat designs I have I have explained in this article will surprise you with their “cool” performances. Design#1: Introduction The unit once built and integrated with any relevant appliance will instantly start exhibiting an improved control of the system saving […]

Filed Under: Temperature Controllers Tagged With: Accurate, Circuits, Electronic, Refrigerator, Solid, Thermostat

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