Rechargable pocket sized amplifier

Step 4 The switch

The switch selects betwen the on mode and the charging mode (off).

If you won't make it rechargable and you will use common batteries just use a normal on/off switch.

Comments

[wobbler]

Great project. You don't actually need to use a double pole switch. You only need to switch one of the batter connections between the charger and the pcb, the other connections can then be commoned. In your diagram, leave the switch in the positive supply in place and remove the bottom switch and just common those together. It will work just the same as your but only needs a simpler switch and less wiring.

You can also attach the charger wire directly to the positive battery terminal to allow you to use the amp while it is being recharged. However, it's a good idea to use a blocking diode in there to stop the battery discharging through the charger when the charger is switched off. The diode needs to be orientated correctly. If you use a cheap 1N4001, then the line end needs to be attached to the battery, the other end to the charger.

[xxInSAniACxx]

I'm probably just stupid, but what is the dotted line?, and i don't see where the pcb connects to the circuit. (what is the pcb?)

[brunoip]

The PCB is the printed circuit board.
The dotted line means that de two switches are connected toghether.
Regards, Bruno

[xxInSAniACxx]

thnx

[NuGFX]

What kind of switch?

[brunoip]

I use the one that select between 220v and 110v in a radio.