Electronics > Beginners
Regulated 9 volt dc power supply from 115 volt AC
fixit7:
Do you have a circuit showing more of the specific parts?
I see the MC78xx chip and the power transformer.
MarkF:
--- Quote from: fixit7 on May 23, 2019, 03:04:10 pm ---Do you have a circuit showing more of the specific parts?
I see the MC78xx chip and the power transformer.
--- End quote ---
The circuit for the PCB is the one I posted earlier in reply #5.
The large capacitor has a 10mm lead spacing and the small one has a 2mm spacing.
Edit- Do you want actual part numbers?
Brumby:
A variation on the PCB to keep it neat and single sided.
I've also added notations for the components:
D1, D2, D3, D4, D5, D61N5395 (note polarity)C16800uF voltage to suit output of rectifier (note polarity)C210uF 16V or higher (note polarity)R1Current limit resistor - say 1K0LED1LED for power indicator - almost any simple LED (note polarity)Heatsink as appropriate for output power draw and input/output voltage differential.
Edit: Polarity of power indicator LED corrected.
MarkF:
@Brumby- Your LED polarity is reversed.
And just to take things over the top.
fixit7:
Nice pic. That's quite a large heat sink.
What is "Mercedes" device?
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