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A
alfredthegrape
replied to the thread
Suitable replacement for a large Siemens capacitor in an old IBM XT power supply
.
I notice that the tolerance for the KON22145 component is +/-20%, whereas the original capacitor is +50/-10% Is this something I should...
Jun 29, 2026
A
alfredthegrape
replied to the thread
Suitable replacement for a large Siemens capacitor in an old IBM XT power supply
.
@davenn: Please see attached photo of the underside of the board the capacitor is soldered to. @bertus: I'd be grateful if you would...
Jun 29, 2026
C
collectors
replied to the thread
RF-ID advice needed
.
Thanks for the info. I am open to any adaptations. I'm even looking at house/factory alarm systems that use ID chips in each detector...
Jun 29, 2026
C
collectors
reacted to
Harald Kapp's post
in the thread
RF-ID advice needed
with
Like
.
To show info on a TV screen the probably most popular option is by using an HDMI interface. Small microcontrollers7 microcontroller...
Jun 29, 2026
C
collectors
replied to the thread
RF-ID advice needed
.
Hi, thanks for the reply. To main idea for this was to have the trains show up on a large TV/monitor using Google sheets, & what seemed...
Jun 29, 2026
Martaine2005
reacted to
hevans1944's post
in the thread
RF-ID advice needed
with
Like
.
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...
Jun 29, 2026
davenn
reacted to
hevans1944's post
in the thread
Newbie Advice Needed Please
with
Like
.
Hmmm. Yet another drive-by poster who is only looking for a "quick answer" and is unwilling to enter into a discussion. If I were...
Jun 29, 2026
hevans1944
replied to the thread
power
.
PCB design often (always, actually) occurs post circuit design, mainly because it is difficult if not impossible to layout component...
Jun 28, 2026
hevans1944
replied to the thread
Newbie Advice Needed Please
.
Hmmm. Yet another drive-by poster who is only looking for a "quick answer" and is unwilling to enter into a discussion. If I were...
Jun 28, 2026
hevans1944
replied to the thread
RF-ID advice needed
.
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...
Jun 28, 2026
hevans1944
replied to the thread
issue with homemade DC motor + hall effect sensor
.
The A3144 has an open-collector NPN transistor output. This needs to be directly collected to the MOSFET gate input and pulled up with a...
Jun 28, 2026
crutschow
replied to the thread
How is coating wear on ESD tweezers typically assessed in production environments?
.
What is the purpose of this "anti-static" coating on the tweezers since they are made of conductive metal? Does the lack of it affect...
Jun 26, 2026
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
davenn
replied to the thread
Suitable replacement for a large Siemens capacitor in an old IBM XT power supply
.
well, if we cant seen the pins (even whilst it's still on the board) - then it's very difficult to help you
Jun 26, 2026
A
alfredthegrape
replied to the thread
Suitable replacement for a large Siemens capacitor in an old IBM XT power supply
.
@bertus: Unfortunately the cap you mention is an axial component, and I require a radial one. It looks as though I'm going to have to...
Jun 25, 2026
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