Any self-respecting radio amateur, for a long time engaged in the implementation of creative ideas into life, or simply collecting on his desk
crafts -
homemade comes to a sound decision - to have your own, personal, regulated source of nutrition. Previously, I made a decent amount of this good, but I exchanged, gifted and distributed everything to friends, relatives and comrades. Correctly say - the shoemaker is always without his boots. Finally, I had a clever idea - for myself to make a personal regulated power supply unit of decent quality. The factory power supply for BP-36-100 gas heaters was preserved in my bins.
I once wanted to make a laboratory unit of constant voltage from it, but it seemed heavy and the product lay for a long time with dead capital.
So that the idea doesn’t fade away, I wrote an assembly of KBL410 diode bridge on Aliexpress,
for voltage regulator chip LM317
and digital volt - ammeter.
After a couple of weeks, the first package arrived (parcel), and soon received two at once, the postman brought them directly to their home address. I laid out all the wealth on the table, admired it, began to search and collect the missing components from the bottomless bins in the form of attics, pantries and sheds; instrument terminals, connectors and other trifles.
He took the transformer out of the case,
I wound 50 turns from the secondary winding. To power the multimeter, I wrapped a separate winding in two wires - 40 turns.
The power supply decided to assemble in another case, this case is stamped from thick iron and is difficult to process.
The front panel was cut out of a piece of plastic from the refrigerator.
I installed a diode bridge and a microcircuit on radiators. Mounting mounted
I hid the microcircuit in a pencil case from the kinder surprise, in the pencil case I pre-drilled holes for ventilation.
He provided the lid with a carrying handle.
The electrical circuit of the power supply is typical, I have seen several crafts even on our website, so I do not provide it in the article. The unit was tested successfully, but they can also charge batteries.
At the moment, the shape of the battery pack from a screwdriver.
