• 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

Indicator Circuits

Home » Indicator Circuits » Page 3

Battery Status Indicator Circuit using Flashing LED

Last updated on 28 July 2025 by Admin-Lavi Leave a Comment

Battery Status Indicator Circuit using Flashing LED is an easy to make project. Circuit uses BC547 and BC557 transistor, some resistors, capacitors, one diode and one LED. LED show battery condition by blinking light. It work with 6 to 12V battery and it is easy way to know battery health and it ensures it works […]

Filed Under: Indicator Circuits

Simple Audio Level Indicator Circuit using IC LM3915

Last updated on 13 August 2025 by Admin-Lavi Leave a Comment

Simple Audio Level Indicator Circuit using IC LM3915 show sound strength with lights. Its display driver is good for sound visual circuits. It takes analog voltage and can light up 10 LEDs, LCDs or other displays in line. Here LED VU meter is used. Music lovers like it because it show sound level with lights. […]

Filed Under: Audio Circuits, Indicator Circuits

Simple Decimal Counter Circuit

Last updated on 26 July 2025 by Admin-Lavi Leave a Comment

In this article for Simple Decimal Counter Circuit instead of count in binary (0 to 1) the decimal counter count in base is 10 (0 to 9). One simple and main way to make it: Use Decade Counter IC which is good for beginners. The IC like 4017 is easy to find and can already […]

Filed Under: Indicator Circuits

Automobile Brake Failure Indicator Circuit

Last updated on 26 July 2025 by Admin-Lavi Leave a Comment

Automobile Brake Failure Indicator Circuit is backup system. It tell driver if brake system have a problem. It uses electric parts to check brake and if problem comes then it show light or make sound. This circuit work only in cars with negative grounding. It also give signal if brake switch does not work. In […]

Filed Under: Indicator Circuits

24V Flasher Circuit

Last updated on 25 July 2025 by Admin-Lavi Leave a Comment

24V Flasher Circuit can ON-OFF 24V thing like lightbulb again and again. Can use to turn signal or warning flash light. This circuit uses IC 555 is common for making timer or flasher. We can change flash speed by adding resistor and capacitor to IC 555. This way is not so flexible but easy. Also […]

Filed Under: Indicator Circuits

Logic NAND Gate Circuit using Transistors

Last updated on 11 October 2025 by Admin-Lavi Leave a Comment

Logic NAND Gate Circuit using Transistors is very important in digital logic. It work opposite of AND gate. Output is HIGH when any input is LOW. NAND gate is called “universal gate” because we can make all other gates like AND, OR, NOT using it. Truth Table for Logic NAND Gate: Input A Input B […]

Filed Under: Indicator Circuits

  • « Go to Previous Page
  • Page 1
  • Page 2
  • Page 3
  • Page 4
  • Page 5
  • Interim pages omitted …
  • Page 7
  • Go to Next Page »

Primary Sidebar




Categories

  • Alarm Circuits (35)
  • Amplifier Circuits (67)
  • Arduino Projects (59)
  • Audio Circuits (99)
  • Automobile Circuits (19)
  • Battery Charger Circuits (54)
  • Free Energy (13)
  • Heater and Temperature Controllers (10)
  • High Voltage (1)
  • Indicator Circuits (42)
  • Inverter Circuits (16)
  • LDR Circuits (18)
  • LED and Lamps (123)
  • Meters and Testers (30)
  • Motor Controllers (18)
  • Oscillator Circuits (35)
  • Power Supply Circuits (93)
  • Remote Control Circuits (7)
  • Security and Protection (26)
  • Sensors and Detectors (99)
  • Solar Circuits (22)
  • Timer Circuits (32)
  • Transistor Circuits (65)
  • Transmitter Circuit (14)
  • Tutorials (7)
  • Water Level Controller (4)

Recent Posts

  • Learn the Basics of Analog Circuits
  • Electronic Eye Circuit using IC 4049
  • Sound And Light Metronome Circuit using Transistors
  • Simple LED Circuit
  • IR Burglar Alarm Circuit

Recent Comments

  1. Henrik Arboe Jensen on Adjustable Voltage, Current Power Supply Circuit using Transistor 2N3055
  2. Admin-Lavi on FM Transmitter Circuit (100 meters range)
  3. DEVINDER SINGH on FM Transmitter Circuit (100 meters range)
  4. Admin-Lavi on Constant Voltage, Constant Current Battery Charger Circuit
  5. Bill on Constant Voltage, Constant Current Battery Charger Circuit

Copyright © 2025 | New Circuit Ideas