• 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 » Mini Projects » Page 43

Mini Projects

Simple Metal Detector Circuit using IC 555

Last updated on 5 June 2026 by Admin-Lavi Leave a Comment

This is Simple Metal Detector Circuit using IC 555, uses IC 555 chip which works like small clock and makes signal to help find metal and magnet Also, it is easy to build and good for beginners. Circuit Working: Parts List: Components Values Quantity Resistor 47k 1/4 watt 1 Capacitors Electrolytic 10μF 25V 1 Electrolytic […]

Filed Under: 555 Timer Projects, Hobby Circuits, Mini Projects, Oscillator Circuits, Security and Protection, Sensors and Detectors

Simple Toy Organ Circuit using IC 555

Last updated on 5 June 2026 by Admin-Lavi Leave a Comment

This is small and Simple Toy Organ Circuit using IC 555 make sound like music when we press a switch. We use an IC 555 in astable mode to generate sound and when the user presses different switches, the circuit produces different tones. Therefore, the circuit is simple to construct and serves as an excellent […]

Filed Under: 555 Timer Projects, Audio Circuits, Mini Projects

Simple Mains Phase Detector Circuit using CMOS ICs

Last updated on 4 June 2026 by Admin-Lavi Leave a Comment

This article talks about two easy and Simple Mains Phase Detector Circuit using CMOS ICs like IC 4001 and IC 4060; also they find if mains AC 220V or 120V is present in air. There is no need to touch the mains, circuit uses antenna to feel mains power in air. Circuit Working (using IC […]

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

Simple IC 555 Oscillator Circuits

Last updated on 4 June 2026 by Admin-Lavi Leave a Comment

Simple IC 555 Oscillator Circuits is a 555 timer chip which is common and easy to use; also it is good for many projects. But for some circuits we must know how it works when not active. Two main pins: IC 555 Pinouts Here is a list that shows what each pin on the chip […]

Filed Under: 555 Timer Projects, Hobby Circuits, Mini Projects, Oscillator Circuits, Timer Circuits

Simple Phone Transmitter Circuit

Last updated on 4 June 2026 by Admin-Lavi Leave a Comment

Simple Phone Transmitter Circuit uses few parts, as it take sound from phone talk and changes to signal and also signal goes far using antenna. Furthermore, this circuit is easy to make and works well with landline phone. Circuit Working: Parts List: Components Values Quantity Resistors 10k, 47k, 330Ω (1/4 watt ) 1 each Capacitors […]

Filed Under: DIY Projects, Mini Projects, Oscillator Circuits, Transmitter Circuit

Simple Buck Converter Circuit for Converting 12V to 3V

Last updated on 3 June 2026 by Admin-Lavi Leave a Comment

Simple Buck Converter Circuit for Converting 12V to 3V also called step-down converter is common in electronics; it takes high DC voltage and makes it lower, like a valve but for voltage. Additionally, phones and laptops use this type of circuit to convert a 12V battery supply into lower voltages, such as 3V, for smaller […]

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

  • « Go to Previous Page
  • Page 1
  • Interim pages omitted …
  • Page 41
  • Page 42
  • Page 43
  • Page 44
  • Page 45
  • Interim pages omitted …
  • Page 66
  • 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