Hello,Hello,
The diodes are present to protect the stabelizer chips from backflowing currents.
Greetings,
Bertus
Thank you ,Hello,
That will do fine.
If you are going to use the powersupply for both boards, increase the buffer capacitors to 2200uF.
Greetings,
Bertus
Hello.Hello,
You could try something like this using transformer 6:
Greetings,
Bertus
Hello,Hello,
When you look in the datasheets of the LM78XX and 79XX you will see there are always two small capacitors around the stabelizer.
One at the input and one at the output.
The capacitors are there to prevent the stabelizer from oscillating.
In the schematic I gave you (from a dutch site) there are only the capacitors at the output (1 uF at the 78XX and 2.2 uf at the 79XX).
Greetings,
Bertus
Hello ,Hello,
You could try something like this using transformer 6:
Greetings,
Bertus
Hello ,Hello,
Did you use a second bridge rectifier for the second board?
You can connect the second stabelizer direct afther the brige of the first board (on the positive capacitor).
When connecting the grounds together now there will be problems.
Greetings,
Bertus
Hello,Hello,
As I told you you would expect trouble the way the powersupplies where connected together.
Can you make a schematic how you actualy did connect the powersupply-boards?
Greetings,
Bertus
Hello,Hello,
As you can see now the second brigde rectifier did short the transformer when you connected the - to the ground.
Here is what I had in mind with the second stabelizer:
Greetings,
Bertus
Hello ,Hello,
You could try something like this using transformer 6:
Greetings,
Bertus
by Jake Hertz
by Jeff Child
by Jake Hertz
by Duane Benson