Re: Weak TZ Flippers.
- From: PinAffliction <s.torpe@xxxxxxxxxxxxx>
- Date: Sat, 13 Oct 2007 22:02:53 -0700
Note - your replys are more accessible if you put them at the
beginning of the post, for future reference, thanks.
You are correct about my machine being jumpered for low line, however,
I actually adjusted my reported TZ readings down by about 5% to
somewhat remove the low line jumper increases, and keep in mind my
line is low to begin with.
So your most recent readings are Low but otherwise resonably ok.
When you take a given AC voltage, for example 50 Vac, and rectify it
with a full wave bridge rectifier as our pins do;
if under perfect conditions with no losses or load, the output voltage
will be 1.414 times the RMS AC input voltage value. So in the case of
our 50 volt AC example, you would expect to see 50 X 1.414 = 70.7
volts DC. This is a pulsating DC output at twice your AC input
frequency.
In the US, the AC is at a frequency of 60hz, so the output of the
bridge is 120hz DC.
In real world applications there is some loss across the bridge
rectifier, connectors, PCB foils, etc, additional voltage is lost as
the load is increased, and this is also affected by how large the
filter capacitors are.
In your case you look like a candidate for the low line rewiring, but
should really base this on what your input voltage is from the wall.
One other thing to verify, is that all four legs of the bridge
rectifier on the Fliptronic board are good. If one of the four legs is
open, and the other three are good, your no load output will look
pretty much ok with a meter, but will be missing 25% of the waveform
power under load.
I believe there are a lot of previous posts on how to check bridge
rectifiers, and at Marvins guides, so I won't go into that here.
Good luck,
Scott
On Oct 13, 5:41 pm, necro_nemesis <necro_neme...@xxxxxxxxxxx> wrote:
Ok. So I checked all the wiring and it is identical to what you have
listed.
Now readings are exactly
52 Volts at J102. (as opposed to your 56)
No loss 52 Volts at J104
No loss 52 Volts at J901
J907 putting out 63 VDC.
at the flippers I am also reading 63 VDC today.
I don't know why I got a low reading at the coils yesterday but I did
remove and replace connectors which may have had some impact, but I
also was not getting any sort of sensible reading at J907 with the
connector removed and straight to ground. I'm using a different meter
today. I suspect my other one had issues.
I am assuming that what is happening here is my initial lower wall
voltage is translating to low voltages all the way down the line. You
are running the other low voltage taps on the transformer to get the
higher voltages, are you not?
Does it make sense that 52 VAC in would result in 63 out and the
circuit performing as it should?
Does that translate to your 56 VAC input producing 69 out? It would
seem a gain of 6 volts DC for an differential of 4 VAC going into the
rectifier is maybe not just the voltage input alone giving you the
additional 6 volts. What do you think?
TIA.
.
- References:
- Weak TZ Flippers.
- From: necro_nemesis
- Re: Weak TZ Flippers.
- From: Lloyd Olson
- Re: Weak TZ Flippers.
- From: necro_nemesis
- Re: Weak TZ Flippers.
- From: PinAffliction
- Re: Weak TZ Flippers.
- From: necro_nemesis
- Re: Weak TZ Flippers.
- From: PinAffliction
- Re: Weak TZ Flippers.
- From: necro_nemesis
- Re: Weak TZ Flippers.
- From: PinAffliction
- Re: Weak TZ Flippers.
- From: PinAffliction
- Re: Weak TZ Flippers.
- From: necro_nemesis
- Weak TZ Flippers.
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