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Martaine2005
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From
Fulham, London
Joined
May 12, 2015
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Martaine2005
replied to the thread
LED TESTER c4 value
.
C4 is a 25V 470uF capacitor. Hope that helps.
Today at 7:24 AM
Martaine2005
reacted to
Delta Prime's post
in the thread
Suitable replacement for a large Siemens capacitor in an old IBM XT power supply
with
Like
.
The printed nominal capacitance value, is not the actual value capacitance and will vary depending on circuit frequency. As long as...
Tuesday at 9:42 AM
Martaine2005
reacted to
hevans1944's post
in the thread
RF-ID advice needed
with
Like
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The key parameter that you need is the position of the train: "...when a train enters & leaves an area", An RF-ID will NOT accomplish...
Monday at 5:39 AM
Martaine2005
reacted to
bertus's post
in the thread
Suitable replacement for a large Siemens capacitor in an old IBM XT power supply
with
Like
.
Hello, The datasheet i posted shows wich pin is positive and wich pins are negative. Even an axial capacitor would be possible to use...
Jun 26, 2026
Martaine2005
reacted to
bertus's post
in the thread
Comedy Thread
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Like
.
Multitasking is a pretentious word for doing a lot of things halfway.
Jun 23, 2026
Martaine2005
replied to the thread
Is this true? Diamond battery. Cool
.
I doubt that this is anywhere possible. A diamond is indeed a great land made stone, but a radioactive capacitor or voltage storage it...
Jun 19, 2026
Martaine2005
reacted to
bertus's post
in the thread
Comedy Thread
with
Like
.
Jun 8, 2026
Martaine2005
reacted to
crutschow's post
in the thread
Cat door sensor jammed by steel (metal) enforced wall
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Like
.
The plastic is just to provide more space between the sensor and the metal wall. It does nothing by itself otherwise to block the...
May 27, 2026
Martaine2005
replied to the thread
Cat door sensor jammed by steel (metal) enforced wall
.
The second to last photo and the last photo show the overall aperture. 1/2” plastic strips inside the aperture forming a barrier. This...
May 26, 2026
Martaine2005
replied to the thread
Cat door sensor jammed by steel (metal) enforced wall
.
Yes, metal can effect radio waves of RFID. It can disrupt and de-tune the radio signal. Plastic will form a barrier.
May 22, 2026
Martaine2005
reacted to
SandWiz's post
in the thread
Cat door sensor jammed by steel (metal) enforced wall
with
Like
.
I'll definitely post pictures tomorrow so you can see it clearly 😊🙏 Thanks Martaine
May 22, 2026
Martaine2005
replied to the thread
Cat door sensor jammed by steel (metal) enforced wall
.
RFID!. Interesting. You said it works about 50mm (5cm) away from the door. I would first try a plastic barrier. A half inch (1/2”)...
May 22, 2026
Martaine2005
replied to the thread
Cat door sensor jammed by steel (metal) enforced wall
.
The electronics are in the front, not the tunnel section you put foil over. Also, adding foil is doing the same thing as the metal...
May 22, 2026
Martaine2005
replied to the thread
Ignition coil...
.
I think it would depend on the frequency as ignition coils are pulsed DC. Our homes are 50/60Hz depending on what country you’re in...
May 21, 2026
Martaine2005
reacted to
davenn's post
in the thread
Comedy Thread
with
Like
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May 20, 2026
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