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Yes... Perhaps i was not so clear in asking for it.
What i mean is i already have a spst button with which i power cycle my instrument's electronics, so i'm wondering if exist some opto coupled device that basing on the same button can attach/detach usb power flow in the usb cable 8-O
Hi all,
i'm a newbie in this field and i'm wondering if exist some way to control power flux of a USB connection: i mean i have
a USB device powered from the PC usb port, and i want to have the possibility to cut off the power to the device together with same button that shutdown other...
Hello,
sorry for the delay in my answer, but i haven't understood exactly what you mean. When you say that datasheet does not mentione any capacitor, do you mean to reach the ripple reported in datasheet itself i suppose, so if i put external filtering in output i can lower that ripple.
Is...
Thank you FvM
I've seen that a TRACO TEL 3 2423 is capable to deliver ±15@±100mA with 1000uF max capacitive Load.
I've simulated a C-L-C 20uF - 10mH(600ohm) - 400uF network on TINA with 50mV ripple and seems that ripple is greatly reduced.
Can i create a simple circuit on PCB with this DC DC...
Thanks for your answer dick_freebird ,
my current requirements are ±100mA on ±15V... so do you mean i have to add 1 LDO with +15Vin and +15Vout and 1 LDO with -15Vin and -15Vout ?
With a total of 3 components i can realize so a very low ripple PSU ±15Vdc@±100mA?
Thanks again
Hi all,
i'm not an expert in electronics:shock:, what i need is a ±15Vdc with max 15-20mV ripple amplitude, are perhaps
already available PCB modules with filters on them suitable to mount DC DC converters and further reduce their output ripple?
I have found an XPPOWER DC DC IT4815S with 50mV...
Hello Rahdirs,
thank you for your answer!
Do you mean that if i buy following product and use a 24VDC input instead 2X24AC this circuit will work the same ?
But what about the central wire of the transformer used a reference-GND? If i use single 24dc i'm wondering how it can work the same...
Hi all,
i'm looking for a commercial Power supply with lm317 - lm337 or something similar but that must have DC input .
All commercial solutions i've found have AC input so require a transformer with central wire and i want to avoid this:-(..
I've found only this...
Hi all,
I need a compact PSU with following specs:
• Compact size ~140X40 mm
• Unipolar Input Vdc (we are able to feed it with Vdc in the range 6~24Vdc)
• Power supply rejection ratio 5μV/V (-106dB)
• Output ±12Vdc
• Capable to deliver 100mA on +12V and -100mA on -12V
I'm still searching...
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