I have a transformer 120vac with some step down legs that put out 8v and 15 v. When I install a single wave rectifier I wind up with about 15vdc. The transformer is about .250kva. Iam building this for my sons Ham radio. It is a mobile unit that he will have in the house for now.
I think I should install a capacitor across the dc terminals with possibly a resistor and diode in series but in parallell to capacitor. Diode installed reverse to polarity so as not to create a short.
What size resistor and capacitor should I use. It seems like i've seen this type of power supply before but I can't remember where.
I know I could buy a power supply but what would this site be without people like us. It's also a teaching moment for him. He is 15 and despises learning from a book but has had to learn the rules for his techninians license from pdf files. This has been good for him and he is interested in building things.
I think I should install a capacitor across the dc terminals with possibly a resistor and diode in series but in parallell to capacitor. Diode installed reverse to polarity so as not to create a short.
What size resistor and capacitor should I use. It seems like i've seen this type of power supply before but I can't remember where.
I know I could buy a power supply but what would this site be without people like us. It's also a teaching moment for him. He is 15 and despises learning from a book but has had to learn the rules for his techninians license from pdf files. This has been good for him and he is interested in building things.