Hi,
I have an Wahl hair clipper to which I lost the charger, I am trying to build / convert an existing power supply to charger it:
It requires 3.5v 1A to charge, I followed some other guide on the internet to reduce the voltage of an 12v 2A Ac Adapter to the required voltage.
The device picks up the power input and shows its charging but I left it through the night and it didnt charge 1% even.
I measured the voltage while on charge with this circuit and it dropped 1V while charging to about 2.5v, not sure if its normal, I dont have any fancy measurement tools to use, only a basic multi meter.
Is there some other components needed to charge a device?
I did a little circuit diagram to illustrate what I did to accomplish this, this is all the components I had available at the moment.
I connected my device to charge on the bottom points.
I have an Wahl hair clipper to which I lost the charger, I am trying to build / convert an existing power supply to charger it:
It requires 3.5v 1A to charge, I followed some other guide on the internet to reduce the voltage of an 12v 2A Ac Adapter to the required voltage.
The device picks up the power input and shows its charging but I left it through the night and it didnt charge 1% even.
I measured the voltage while on charge with this circuit and it dropped 1V while charging to about 2.5v, not sure if its normal, I dont have any fancy measurement tools to use, only a basic multi meter.
Is there some other components needed to charge a device?
I did a little circuit diagram to illustrate what I did to accomplish this, this is all the components I had available at the moment.
I connected my device to charge on the bottom points.
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