Modern multitester-oscilloscope-generator - https://ali.ski/7rsoI.
The tester was powered by a crown, which is quickly discharged from storage.
For power from an external source, a stabilized 12-9 volt DC-DC step down was supplied.
Before installation, the DC-DC was set to 9 volts with a load of 470 ohms.
Buy DC-DC step down - https://ali.ski/r5LBQ.


#diy
#ideas
#repair
#handimada
#handimada
#handmade
#howto
#lifehack
#savemoney
#electronics
#fix
#shorts