Battery Elimination/Replacement with USB or LED Power
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USB or LED Powered Battery Replacement. Works with efficient USB Power Supplies as Replacement for 2 AA Cells. If…
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USB or LED Powered Battery Replacement.
Works with efficient USB Power Supplies as Replacement for 2 AA Cells. If there is need for more Cells you need to add my AddOn Cell – connected to the “+ out” on the PCB - and switch from USB Power to a LED power Supply (Up to about 7 Cells - 10,5 V)
For Voltage control I use a very cheap step-down-circuit: https://amzn.to/3VKgOym
The Voltage need to be adjusted to about 1,5 V per Battery Cell to be replaced with a small screw and a multimeter as shown on one of my pictures.
As positive pole I'm trim the head to about 6 mm of a thumbtack.
For the minus I use a piece of a brass fastener.
As USB Plug, this one may work: https://amzn.to/4abTCOd
Red cable needs to be connected to the "+" at the "in" side of the PCB. Black to the "-".
For powering of more than 2 Cells I use this this one: https://amzn.to/43Az9jB
But please keep in mind that this power supply is working with high voltage and install it only if you have the right knowledge for working with electrical power!
Category: Electronics