• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

Circuit Ideas for You

Get free circuit ideas online.

  • Home
  • Privacy Policy
  • About
Home » Page 21

Simple Over-Temperature Warning Indicator Circuit

Last updated on 11 July 2026 by Admin-Lavi Leave a Comment

This Simple Over-Temperature Warning Indicator Circuit uses an LED to indicate excessive temperature, as it uses only a few easily available components, making the circuit simple, low cost, and easy to build. The circuit turns ON an LED when temperature rises above a set level like 45°C – 55°C and therefore, it is useful for […]

Filed Under: Alarm Circuits, Heater and Temperature Controllers, Hobby Circuits, Indicator Circuits, Mini Projects, Security and Protection, Sensors and Detectors

Arduino Flash Trigger Circuit with Sound Sensor

Last updated on 11 July 2026 by Admin-Lavi Leave a Comment

Nowadays, electronics projects are becoming very popular, especially Arduino based projects are easy to build, because of this the beginners also feel confident. In this project, an Arduino monitors the sound sensor and triggers the camera flash when it detects a sound. So Arduino Flash Trigger Circuit with Sound Sensor is very useful for high […]

Filed Under: Arduino Projects, Hobby Circuits, Mini Projects, Sensors and Detectors

Solar Cell Based Camera Flash Trigger Circuit

Last updated on 11 July 2026 by Admin-Lavi Leave a Comment

Photography flash units need correct timing; however, many old flash units do not have trigger input, so a Solar Cell Based Camera Flash Trigger Circuit is useful, as this circuit is very simple as it uses very few components and also it does not need any battery. The circuit operates by detecting light, when the […]

Filed Under: DIY Projects, Hobby Circuits, Mini Projects, Sensors and Detectors, Solar Circuits

12V Boost Converter Circuit from 3.3V to 5V Supply

Last updated on 11 July 2026 by Admin-Lavi Leave a Comment

Nowadays, many electronic projects need higher voltage, however, the available supply is very low for example 3V or 3.3V batteries are common. But many circuits need 12V so, here we have designed a 12V Boost Converter Circuit from 3.3V to 5V Supply, as this circuit increases low DC voltage to high DC voltage and therefore, […]

Filed Under: DIY Projects, Power Supply Circuits

Boost Converter Circuit From 5V to 12V using Transistors

Last updated on 11 July 2026 by Admin-Lavi Leave a Comment

Many electronic projects need 12V power, but sometimes only 5V supply is available, for example from USB, logic board or microcontroller; So, here, this Boost Converter Circuit From 5V to 12V using Transistors is useful which converts 5V DC to 12V DC. This circuit uses simple components such as transistors and an inductor, making it […]

Filed Under: DIY Projects, Power Supply Circuits, Transistor Circuits

Simple 12V Power Supply Circuit with Filter Capacitor

Last updated on 11 July 2026 by Admin-Lavi Leave a Comment

Many electronic circuits require a DC power supply, while the mains provides AC power, also this Simple 12 V Power Supply Circuit with Filter Capacitor converts AC into 12V DC and delivers up to 2 A of output current. This circuit uses only a few components, making it simple, low cost, and easy to build, […]

Filed Under: Mini Projects, Power Supply Circuits, Voltage Regulator

  • « Go to Previous Page
  • Page 1
  • Interim pages omitted …
  • Page 19
  • Page 20
  • Page 21
  • Page 22
  • Page 23
  • Interim pages omitted …
  • Page 171
  • Go to Next Page »

Primary Sidebar




Categories

  • 555 Timer Projects (137)
  • Alarm Circuits (81)
  • Amplifier Circuits (94)
  • Arduino Projects (103)
  • Audio Circuits (190)
  • Automation Circuits (150)
  • Automobile Circuits (40)
  • Battery Charger Circuits (89)
  • DIY Projects (437)
  • Free Energy (12)
  • Heater and Temperature Controllers (32)
  • High Voltage (24)
  • Hobby Circuits (244)
  • Indicator Circuits (63)
  • Inverter Circuits (17)
  • IoT projects (12)
  • LDR Circuits (47)
  • LED and Lamps (201)
  • Meters and Testers (44)
  • Mini Projects (392)
  • Motor Controllers (26)
  • Oscillator Circuits (70)
  • Power Supply Circuits (245)
  • Radio Frequency (8)
  • Remote Control Circuits (12)
  • Renewable energy (20)
  • Security and Protection (128)
  • Sensors and Detectors (236)
  • Solar Circuits (31)
  • Timer Circuits (63)
  • Transistor Circuits (178)
  • Transmitter Circuit (19)
  • Tutorials (33)
  • Voltage Regulator (67)
  • Water Level Controller (10)

Recent Posts

  • Low Current Controlled Battery Charger Circuit using LM723 IC
  • 741 Op-Amp Treble Booster Circuit
  • Simple Diode and Transistor Based Audio Limiter Circuit
  • Simple 500mW Speaker Driver Circuit
  • Easy DIY LM386 Audio Amplifier Circuit

Recent Comments

  1. Admin-Lavi on High Voltage Fence Charger Circuit
  2. etere on High Voltage Fence Charger Circuit
  3. Admin-Lavi on High Voltage Fence Charger Circuit
  4. egidio grzinic on High Voltage Fence Charger Circuit
  5. Logic OR Gate Circuit using Transistors - Circuit Ideas for You on Automatic Street Light Circuit using LDR

Copyright © 2026 | New Circuit Ideas