Hi,
I would like to run a 9vdc powered preamp with a 12v car battery.
I guess a need a voltage regulator? right?
Any advice for assembled one?
Thanks
C
I would like to run a 9vdc powered preamp with a 12v car battery.
I guess a need a voltage regulator? right?
Any advice for assembled one?
Thanks
C
I would use a 7809 regulator. 100uF and 0.1uF 25v input to ground. 0.1uF output to ground. The ground is the tab and 2nd pin.No need for anything more complicated. In the example forget the bridge rectifier as that will be your battery input.
Design of 9 V regulator using 7809 with circuit diagram and schematics
Design of 9 V regulator using 7809 with circuit diagram and schematics
Yes only 9vdc, it's a tiny one 😉
An externally hosted image should be here but it was not working when we last tested it.
Hi,
They claim input voltage must be 9V +/- 10%, 8V to 10V.
I guess that must be because of the valve heater supply.
Its relatively trivial to knock up the required regulator,
in a small box, wired into the connecting cable. If you
can't do it ask someone here, someone probably will.
Personally I am suspicious of most of the guff.
rgds, sreten.
iFi micro iTube 'Swiss Army Knife' Hi-Fi's most funky box of tricks? Review By Clive Meakins
micro – iTube
http://ifi-audio.com/wp-content/uploads/data/manual/iTube-Manual.pdf
AMR & iFi-Audio :: Support Ticket System
They claim input voltage must be 9V +/- 10%, 8V to 10V.
I guess that must be because of the valve heater supply.
Its relatively trivial to knock up the required regulator,
in a small box, wired into the connecting cable. If you
can't do it ask someone here, someone probably will.
Personally I am suspicious of most of the guff.
rgds, sreten.
iFi micro iTube 'Swiss Army Knife' Hi-Fi's most funky box of tricks? Review By Clive Meakins
micro – iTube
http://ifi-audio.com/wp-content/uploads/data/manual/iTube-Manual.pdf
AMR & iFi-Audio :: Support Ticket System
Last edited:
These should work. You'll need to add suitable connectors to the wires.
Waterproof DC DC Converter 12V Step Down to 9V 3A 15W Power Supply Module | eBay
Waterproof DC DC Converter 12V Step Down to 9V 3A 15W Power Supply Module | eBay
be care of the overal performance given by these "chinese stuff" , a good LDO and low noise regulator will better fit ;-)
the sound quality depends on the supply quality ;-)
.
the sound quality depends on the supply quality ;-)
.
Be very careful in hooking it up. Observe the DC voltage polarity at both the input and output,
and if you have a meter double check with that, before connecting to your circuit.
thanks for advices and tricks ;-)
At the opposite of Chinese stuff what do you think about this one?
Rather expansive isn't it?
At the opposite of Chinese stuff what do you think about this one?
Rather expansive isn't it?
What is that glass tube thingie in the middle of the PCB supposed to do?
Do you have a schematic?
Do you have a schematic?
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