Home |
Search |
Today's Posts |
|
UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to uk.d-i-y
|
|||
|
|||
Very poor suppression
Two devices bought this week. Both work OK but the problem is that their
power supplies being of the switch mode kind push out lots of annoying RF at frequencies between 100khz and around 20mhz. One of my hobbies is listening to the short waves and even medium and long waves, so its all a bit depressing to find that in order to continue both items need to be off. One, the DVD has the psu inside its box and the on off switch does not seemingly turn off the psu, which whines away at various places in the spectrum, but the True Call cal screening device, although it works fine puts out a nasty load of birdies quite close together which move as you do various things on the unit or remotely, and have a 50 hz buzz on them for good measure. I may ask the company if they know of a source of old fashioned psus for it as it has a very tiny right angled plug on the end of the wall wart wire. Life is just getting very depressing when you consider how long we have been making switch mode devices, surely we should expect better by now! Brian -- From the Sofa of Brian Gaff Reply address is active Remember, if you don't like where I post or what I say, you don't have to read my posts! :-) |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Useful little app for those of us with poor memories ... | Electronics Repair | |||
Are you poor? | Metalworking | |||
Residential Grounding and Surge Suppression | Home Repair | |||
Help me die poor! | UK diy | |||
Suppression of (electrical) noise from CH Thermostat | UK diy |