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Re: Switching Regulator?
Posted: Sun Jan 14, 2024 5:16 pm
by 1024MAK
The pin details of a 7805 are well documented. See
this site for example
Mark
Re: Switching Regulator?
Posted: Sun Jan 14, 2024 5:17 pm
by t0nyt
1024MAK wrote: ↑Sun Jan 14, 2024 5:16 pm
The pin details of a 7805 are well documented. See
this site for example
Mark
Cheers!
Re: Switching Regulator?
Posted: Sun Jan 14, 2024 5:18 pm
by t0nyt
Chr$ wrote: ↑Sun Jan 14, 2024 5:11 pm
I think the left pin when you look at the QL from the front is the input, but am not 100% without checking. Just check it with a multimeter, the output pin will be 5v.
Will do, thanks
Re: Switching Regulator?
Posted: Wed Jan 17, 2024 8:33 am
by t0nyt
My Traco TSR 2-2450 has arrived
However the legs are considerably thinner (& shorter) than the existing regulator so obviously won't just plug in to the socket
Could I ask what methods people have used to fit the Switching Regulator please?
Many thanks
Re: Switching Regulator?
Posted: Wed Jan 17, 2024 8:43 am
by Chris_68
Hi
Attached a photo how I did, but you don't have to do the same. The pins are thinner so I decided to use the legs from old restores bent in an angle.
If you don't get good contact then you can always solder them directly to the wires or PCB depending how brave you are.It can be standing and not mounted the way I did.
/Chris
Re: Switching Regulator?
Posted: Wed Jan 17, 2024 8:53 am
by t0nyt
Thanks
Don’t want to remove the socket or solder to wires/board so will give that a go thanks
I’m not going to sacrifice the existing regulator as it’s the only one I’ve got that actually works with original PSU (but not with vRetro converter if Trump card installed)
If I can’t find anything else I’ll sacrifice my spare 1.5a regulator which doesn’t seem to work correctly in the QL even with the original PSU
Many thanks
Re: Switching Regulator?
Posted: Wed Jan 17, 2024 9:37 am
by Chris_68
t0nyt wrote: ↑Wed Jan 17, 2024 8:53 am
Thanks
Don’t want to remove the socket or solder to wires/board so will give that a go thanks
I’m not going to sacrifice the existing regulator as it’s the only one I’ve got that actually works with original PSU (but not with vRetro converter if Trump card installed)
If I can’t find anything else I’ll sacrifice my spare 1.5a regulator which doesn’t seem to work correctly in the QL even with the original PSU
Many thanks
Dont sacrifice 7805 to get the pins it that's what you meant. Don't you have any resistors or diodes where you can cut 10mm? Could also try a PCB header, not sure the pins are long enough though.
Re: Switching Regulator?
Posted: Wed Jan 17, 2024 11:14 am
by t0nyt
Resistor legs seemed too thin, so I ended up sacrificing the spare 7805
Will test it later to see if it solves anything though
Re: Switching Regulator?
Posted: Wed Jan 17, 2024 1:25 pm
by t0nyt
t0nyt wrote: ↑Wed Jan 17, 2024 11:14 am
Resistor legs seemed too thin, so I ended up sacrificing the spare 7805
Will test it later to see if it solves anything though
QL seems to be working fine with the new regulator and original PSU
(The spare regulator I sacrificed was almost certainly faulty as it was playing up when I tried to use it)
Many thanks for all the advise
Re: Switching Regulator?
Posted: Wed Jan 17, 2024 2:38 pm
by Chris_68
Hi,
Glad it works!
/Chris