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Dual

220V Dual Alternate Lamp Flasher Circuit

Last Updated on January 19, 2025 by Swagatam 13 Comments

cfl2Bflasher2Bcircuit

This is a mains operated transformerless flasher circuit that can be used for alternately switching a couple of CFL or similar 220V/120V lamp to produce a decorative lighting effect. Circuit Operation The below shown design depicts a simple mains operated dual or alternate lamp flasher, which is designed to flash or blink two mains operated […]

Filed Under: Lamps and Lights Tagged With: 220V, Alternate, Dual, Flasher, Lamp

Adjustable 3V, 5V, 6V, 9V,12V,15V Dual Power Supply Circuit

Last Updated on September 16, 2023 by Swagatam 36 Comments

LM3172BPOWER2BSUPPLY

The purpose of this paper is to detail a variable dual lab power supply circuit which has an adjustable range from 3V, 5V, 6V, 9V, 12V, and 15V or even more at an output current rate of 1 amp. Written By: Dhrubajyoti Biswas The Dual Power Supply Concept In regard to positive volt it is […]

Filed Under: Power Supply Circuits Tagged With: 12V, 15V, Adjustable, Dual, Power, Supply

0 to 50V, 0 to 10amp Variable Dual Power Supply Circuit

Last Updated on September 8, 2023 by Swagatam 275 Comments

In this post I have explained a simple yet very useful 0 to 50V dual power supply circuit which will enable a full 0 to maximum dual voltage +/- control of the input power supply DC. It also includes a wide range current control feature right from 0 to 10 amps. The idea was requested […]

Filed Under: Power Supply Circuits Tagged With: 10amp, 50V, Dual, Power, Supply, Variable

Dual A/C Relay Changeover Circuit

Last Updated on March 8, 2019 by Swagatam 4 Comments

In this post I have explained a simple relay changeover circuit which may be used for switching a couple of A/Cs or any similar load alternately in order to avoid misuse and save power. Technical Specifications Here is the situation: State: California. Facility: Church. The electric rate is greatly influenced by peak usage in any […]

Filed Under: Inverter Circuits Tagged With: Changeover, Dual, Relay

Dual Battery Charger Circuit with Isolator

Last Updated on May 28, 2024 by Swagatam 81 Comments

battery1battery2changeovercircuit

In this post I have explained an innovative automatic dual battery charger with isolator circuit for alternators and engines, which allows monitoring of the charge levels of two individual batteries, and switching them across the loads appropriately. [New Entry] Single Op amp Dual Battery Charger Circuit The circuit working for the above single op amp […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Dual, Isolator

How to Make a Dual Tone Siren Circuit

Last Updated on November 8, 2024 by Swagatam 15 Comments

DUAL TONE SIREN CIRCUIT

This two tone siren circuit explained here gives out a continuously varying high amplitude sound. Since the supply voltage is not critical, it can be used in cars, motor cycles or at home. It can replace the ordinary call bell. A dual one siren is an amplified alarm circuit designed to generate two different audio tones resembling […]

Filed Under: Audio and Amplifier Projects Tagged With: Dual, Siren, Tone

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