IN+ is for the + pole of the battery
GND is or the - pole of the battery
VO+ is the positive output of the module
I did not found a description for the EN pin. So I would to connect it
with GND or IN+. On the back side you need to close one of the solder
bridges to select the output voltage.
It would be better to get the documentation first before buying things.
On the microhpone amplifier, the connector are well labelled. VCC ist
for the power supply. IN is the input and out is the output. For all
three pairs, "-" is the same as GND.
Careful with EN connection voltage, in case the smps controller is
MP2315 and the EN connects directly to MP2315, as stated in my links
MP2315 pins:
AAM
IN
SW
GND
FB
VCC
EN/SYNC
BST
"ABSOLUTE MAXIMUM RATINGS
(1)
VIN ................................................–0.3V to +28V
VSW........ –0.3V (-5V<10ns) to +28V (30V<10ns)
VBST........................................................ VSW+6V
All Other Pins ..................................-0.3V to +6V "
peasant wrote:> Careful with EN connection voltage, in case the smps controller is> MP2315 and the EN connects directly to MP2315, as stated in my links>> MP2315 pins:> AAM> IN> SW> GND> FB> VCC> EN/SYNC> BST>> "ABSOLUTE MAXIMUM RATINGS> (1)> VIN ................................................–0.3V to +28V> VSW........ –0.3V (-5V<10ns) to +28V (30V<10ns)> VBST........................................................ VSW+6V> All Other Pins ..................................-0.3V to +6V "
Had forgotten to write this, from my Protosupplies link, which may
apply:
"Output Enable
The module has an EN (Enable) pin which is active HIGH.
"The module has this pin pulled high by default, so the module will
always be enabled and the EN pin can be left unconnected if the module
will always be enabled."
Wow..! Thank you, Peasant, for this very valuable and comprehensive
information! ???
So, you would suggest to connect battery and consumer to the step down
power supply module the way I sketched in the above image?
If I need a 5 V and a 9 V output (for two different devices) would I
need to connect them using 2 of these step down power supply modules?
A. D. wrote:> If I need a 5 V and a 9 V output (for two different devices) would I> need to connect them using 2 of these step down power supply modules?
Yes, one module has only one output.
A. D. wrote:> So, you would suggest to connect battery and consumer to the step down> power supply module the way I sketched in the above image?
In case this is directed to me: tbh, I have never bought a buck or boost
module, I've built very simple ones though. So I don't really have any
experience with connecting readymade ones. And i don't want to take
reponsibility, so therefore I just provide more links, in which people
connect modules, which look like yours. And actually I guess I would
connect the module as you have
https://www.youtube.com/watch?v=-JmNfzPLv5ohttps://www.youtube.com/watch?v=BC46PkzsCe8
Thanks so much to both of you for sharing your information with me!
So, I now know how to connect my bug converters correctly.
I didn't even expect YouTube videos to exist explaining how to connect
them. Marvellous.
Again, thank you, Stefanus and Peasant ???
A. D. (WhiteKnight) wrote:> a hobbyist trying to connect a 5 V microphone preamplifier
A switched mode power supply may not be the best selection for a mV
handling device. When you hear suspicious noise then try a linear power
supply.
Thanks a lot, Lothar, for the hint!
I will have a careful eye on this when I put the parts together.
Funnily enough: After I watched the YouTube video suggested above, a
second video came up on YouTube through Auto Play explaining the same
thing: https://www.youtube.com/watch?v=giGRrODKJSE
A question of your own?
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Ask it in a thread of its own – more people read along there, and it gets answered more often and sooner.
Connections.png
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