teeeeee
Newbie level 1
Hello, I am looking for a little advice.
I frequently build small analog/digital electronics circuits (using op amps, standard logic chips, etc.), and have a question about power supplies. In the past, I have typically either simply used a lab bench-top power supply, or built a simple transformer + rectification + smoothing circuit, in order to give the necessary small DC voltages for my circuit (+5V, +12V, etc).
However, I recently saw that there are available these very small AC/DC converters, so I bought an ECL10US12 (from XP Power) https://xppower.com/Product/ECL05-30-Series , which take the mains 240VAC and step it down to 12VDC (10W max output power). Since these are much simpler and smaller than building my own linear supply using a bulky transformer, I would like to begin using these for my projects in the future.
Does anyone have any experience using these types of devices for powering the basic low-power cicuits I have described, and have any advice on how to implement it? Is there some good reason why I should stick to the large transformer type PSUs?
In terms of noise, would it be a good idea for example to use external capacitors for filtering out any noise on the PSU output? I can see in the datasheet for this device that it has a switching frequency of 70kHz, and since my circuits are usually quite sensitive, I wouldn't want this noise to show up later in the design. I assume it would then be sensible to use standard voltage regulators directly on the output (e.g. a 7812 regulator)?
Anything I might not be thinking of would be good to know,
Many thanks
I frequently build small analog/digital electronics circuits (using op amps, standard logic chips, etc.), and have a question about power supplies. In the past, I have typically either simply used a lab bench-top power supply, or built a simple transformer + rectification + smoothing circuit, in order to give the necessary small DC voltages for my circuit (+5V, +12V, etc).
However, I recently saw that there are available these very small AC/DC converters, so I bought an ECL10US12 (from XP Power) https://xppower.com/Product/ECL05-30-Series , which take the mains 240VAC and step it down to 12VDC (10W max output power). Since these are much simpler and smaller than building my own linear supply using a bulky transformer, I would like to begin using these for my projects in the future.
Does anyone have any experience using these types of devices for powering the basic low-power cicuits I have described, and have any advice on how to implement it? Is there some good reason why I should stick to the large transformer type PSUs?
In terms of noise, would it be a good idea for example to use external capacitors for filtering out any noise on the PSU output? I can see in the datasheet for this device that it has a switching frequency of 70kHz, and since my circuits are usually quite sensitive, I wouldn't want this noise to show up later in the design. I assume it would then be sensible to use standard voltage regulators directly on the output (e.g. a 7812 regulator)?
Anything I might not be thinking of would be good to know,
Many thanks
