3 replies to this topic

[abanerd10000]

I am building something...

[SushiKitten]

There is no way to keep it completely stable, that's too ideal for the real world. It will be slightly unstable and over time it will decrease bit by bit if you're using a battery. Are you using direct current or alternating current?

The thing about current is you have to draw it out. V=IR so of you want to pull a certain number of amps from a battery or a source you know the voltage of, you need to figure out the resistance needed. Never just attach two wires to the terminals of your source. That is mathematically equivalent to infinite current and causes a short circuit, which is dangerous even with small sources

[SIlhouette]

PowerLoss = P²R/V² which means the higher your voltage the more loss you will have over time. So you can lower your voltage using a transformer and therefor raise your Amperage which will minimize power loss. We could be on the wrong track though so more context would be preferable.

[SpleenBeGone]

More than likely he wants to go from something like a 20 amp wall plug to something more manageable, similar to how phone chargers work. Stepping transformers and resistors are the way to go, along with a capacitor more than likely.