Hi, I need a circuit to change the AC 240v (UK) into 5v 1A, What is the SMALLEST possible way to do this. I know I could use an adaptor but it there a smaller circuit that could be done?
There are literally hundreds of schematics on the net to show you how to build your own 'adapter', even ones without the big step-down transformers (use great caution with these). All things considered, your best option is the store bought adaptor. 1: It is probably in its most compact form. 2: It can be taken out of the case and placed inside a wall receptacle box for more permanent use, using a small DC receptacle to plug into the wall. It is advised to place the adapter circuit on a switch.
Discussions
5 years ago
buy a usb phone charger and open that up for the output wires
http://www.ebay.co.uk/bhp/5v-2a-dc-adaptor
5 years ago
The SMALLEST methods aren't open to an amateur. They involve very detailed circuit design.
5 years ago
There are literally hundreds of schematics on the net to show you how to build your own 'adapter', even ones without the big step-down transformers (use great caution with these). All things considered, your best option is the store bought adaptor. 1: It is probably in its most compact form. 2: It can be taken out of the case and placed inside a wall receptacle box for more permanent use, using a small DC receptacle to plug into the wall. It is advised to place the adapter circuit on a switch.
Answer 5 years ago
+1
The commercial options will be as small as possible to keep material costs as low as possible.
Browse the cheap ones, some are almost as small as an ordinary plug.