Anyone any thoughts on where I could get a replacement for one of these:
I've Googled but not found anything.
Christmas lights: 240v - 4v 1VA with a spade and pin plug.
The logo on the label implies it is AC output. 1VA is very low power.
Try it with 4.5v DC (3x AA cells) and a diode in series and see what
lights up. Then take a look in Maplin if you don't mind paying throught
the nose or eBay if you are not in a hurry. The PSUs that come with a
range of connector fittings are you best bet.
4.5DC might be OK if the LED chain isn't relying on AC power to work
properly. You might get away subverting an old mobile phone charger...
OK well try the 3 x 1.5v battery route and it might work or if not, it
is not too hard to knock up a squarewave oscillator at 50hz running from
a DC supply which should bring back the twinkle to your lights.
Also worth opening up the old transformer and see if just the thermal
fuse has failed?
On Friday, 15 December 2017 14:23:11 UTC, Max Demian wrote:
they have been used as speaker connectors for years and most poeple know what they are. They are speaker connectors.
European audio equipment almost always used circular 5-pin 180 degree DIN
connectors for mic and line level inputs, and line level outputs, and used
the 2-pin connector for each speaker. My Phillips cassette recorder used it,
as did my dad's B&O record deck and his cine projector (for playing sound
through external amp or for dubbing onto the soundtrack).
It was even fitted on Japanese equipment such as Sony radio-cassette
It was only in the 1980s that I first saw phono plugs for line-level
connections between equipment (eg record deck, cassette deck, CD player,
graphic equalizer to amplifier). Phono plugs require more plugs (separate
for left and right) whereas DIN combines both in one plug. ON the other
hand, DIN plugs are more difficult to solder wires onto because the pins are
very close together.
I remember that a lot of equipment had three-pin speaker sockets which would
allow a two-pin plug to be plugged in either way round (ie spade connector
always in the centre hole but pin in either of the holes). I'm not sure what
the thinking was there, because as far as I could tell, the two pins were
connected together so you didn't get phase-reversal buy reversing the plug.
On Monday, 18 December 2017 12:55:57 UTC, Bob Eager wrote:
So yuop don;t knopw do you.
Are you saying that getting the speaker wires crossed is out of phase ?
You do know that the human ear can;t detect phase don't you , no you probba
The human ear is insensitive to a constant relative phase change in a stati
c waveform. For instance, you cannot here the difference between a steady s
awtooth wave (which contains all harmonic frequencies) and a waveform that
contains the same harmonic content but with the phase of the harmonics dela
yed by various (but constant) amounts. The second waveform would not look l
ike a sawtooth on an oscilloscope, but you would not be able to hear the di
fference. And this is true no matter how ridiculous you get with the phase
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