wesleylagunsad
- Jul 23, 2012
- 4
- Joined
- Jul 23, 2012
- Messages
- 4
can i ask u a question?
how much resistance do i need to emit a 3.7volts from a 9volts supply?
how much resistance do i need to emit a 3.7volts from a 9volts supply?
I've moved this into its own thread. The places you picked were inappropriate.
CocaCola asks a very valid question. Even more important to realise is that if the current draw changes (or your 9V supply changes voltage -- say if it's a battery) the voltage will change.
It would be useful to know what you actually want to do (say, drive a motor, light a LED, or charge a lithium battery. Each of these might need 3.7V, but the circuit you would use in each case would be very different.
CocaCola asks a very valid question. Even more important to realise is that if the current draw changes (or your 9V supply changes voltage -- say if it's a battery) the voltage will change.
It would be useful to know what you actually want to do (say, drive a motor, light a LED, or charge a lithium battery. Each of these might need 3.7V, but the circuit you would use in each case would be very different.
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