Power supply LAB - 0 -30 V 5A - LM338K
This Lab power supply I have designed, it's full protected.
It's a good laboratory instrument for those who want to begin but also for professional use.
One transistor is used to activate a rele that break the output connection as soon as the current is above the preset limit . The other transistor is used to activate a piezo buzzer that will beep for a while before breaking the contact.
This supply is capable of 5 A . The lm338k should be mounted on appropriate heathsink, possibly with a fan.
This project is part of a great project : a complete laboratory instrument set , equiped with low frequency oscillator, audio amplifier, frequencymeter and Iron temperature control circuit, all in one box.
Enjoy
Alfredo
posted by alfred @ 18:05
6 Comments:
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molto interessante e ben fatto.il link della email pero non funziona correttamente.avevo bisogno di uno schema per un componente piezoelettrico per una stufa che se ricordo bene consiste solo di 1 diodo,1 condensatore,1 trasformatore e due resistenze.quando andavo a scuola qui in italia costruivo radio e ho una conoscenza di base di elettronica adesso poi diventata utile.devo solo rispolverarla un po.la mia email:robykanoby@hotmail.com. grazie e buone feste.
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