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Mains Voltage and Power Circuits

• Stabilizer Step up 230V AC 500VA
• Solid-State Stabilizer Step up 110V AC
• Mains Voltage Current LED Indicators
• Simple Mains Voltage monitor LM324
• Mains Voltage monitor using LM3914
• Triac based Lamp Dimmer power control

Mains Power Electricals :

Mains power provides the energy that lights up your home. It is high voltage and is used for the Heaters, Fans, Motor and Lights. This voltage is not safe, a qualified Electrician must work on it.



EMI RFI Filters and Electrical Noise Control

If lower safe voltage is transmitted to homes, for the same energy, the copper wires will become thick (costly) as the currents will be high. The contact resistance in junctions can cause fire hazard too. 

Then within homes low safe voltage can be adapted. Like 24V, some are working on it. It is difficult to make it a reality as many appliances and equipment have to be redesigned. This 24V AC may be a reality in the future. The homes will be very safe if that happens.

Mains Power means the 230 V AC 50 Hz or 110 V AC 60 Hz in some countries, The lower power line like 4A to 6A is used for small lamps and fans. The higher power line 10A to 20A is used to drive the High Power Electrical Appliances like Heaters and Motors. This is a single phase supply.

Earthing Practice and Power Quality

Single phase Supply in layman language means a Live, a Neutral and an optional earth. The earthing is a must in every building along with lightning protection. The Neutral is a close to earth potential, The live can give a shock to a man who is in contact with earth at some part of the human body. So great care has to be taken. This live wire or point can be easily checked by a quality standards approved Neon Tester or Field Sensitive non-contact tester.

Electrical Safety and Clean Energy Systems

Three phase supply - there are three Live wires, used in factorys and apartments to power bigger loads and Motors. A 3 phase AC motor is very efficient and economical and most machines like Drills and Lathes are powered by AC Motors. 3 phase supply  becomes essential for industry.

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The voltage is transmitted and supplied to houses at a high level in comparison to low level of batteries. This High Voltage is not safe but Inevitable, as transmitting  at lower voltage means greater current carrying requirements of wires and connectors. That leads to more copper or aluminum usage, more wastage of power due to I2R.

Earthing has to be good, use a Earth Leakage Trip Device. If earth wire gets snapped outside and some appliance is leaking, the metal clad appliances may give shock. Even if no appliance is leaking, the current thru y-capacitors of EMI Filters in Electronic Gadgets like computers are enough to make your Neon tester glow.

• Power Electronics & Energy
• High Energy Circuits.