Hi,

I want to limit the current through a resistor using a capacitor in series with the resistor. The resistor has 16ohm, and it will be connected to 127V AC. I will be using a 55uF capacitor, so the current through the circuit will be 2.5A. The circuit must work 24/7. Does anybody know if there is an issue with this setup?

Thanks

 

Hello
as you tell us the current is alternative and I(RMS)=2.5?
if you use a resistor with 16ohm value the Power dissipation=R*I^2=16*2.5*2.5=100W

 

We do not support discussions on transformer-less power supplies, as they are inherently unsafe.

You must use a transformer to provide galvanic isolation from mains power.

The price of a transformer is a bargain compared to the cost of a funeral. Please do not attempt your idea.

Excerpt from the ToS:

6. Restricted topics. The following topics are regularly raised however are considered "off-topic" at all times and will result in Your thread being closed without question:

• Any kind of over-unity devices and systems
• Automotive modifications
• Devices designed to electrocute or shock another person
• LEDs to mains
• Phone jammers
• Rail guns and high-energy projectile devices
• Transformer-less power supplies