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06-02-2021, 04:53 AM
Hi all Tuberionatians!
I noticed that in the kits there are no Power Resistors anymore for local decoupling.
Or so it seems.
Maybe they are rated 1 Watt and I just don't see it.
In earlier times it was advised to raise them above the PCB or circuit card, but I don't see that notice anymore.
Have the resistors become so much cooler?
Also, it was always advised to make a shape with the legs instead of just keeping them straight.
I always wondered what that is about.
I can think of only one scenario:
The Power Resistor gets very, I mean extremely hot in case of some failure.
It melts, no it boils the solder and threatens to do a "melt down": sink down the solder holes onto the board.
There it could make a short if it touches another component on the way down.
Therefore the legs are bent, so that it can not lower itself onto the board.
Kind regards,
Eric-Jan
I noticed that in the kits there are no Power Resistors anymore for local decoupling.
Or so it seems.
Maybe they are rated 1 Watt and I just don't see it.
In earlier times it was advised to raise them above the PCB or circuit card, but I don't see that notice anymore.
Have the resistors become so much cooler?
Also, it was always advised to make a shape with the legs instead of just keeping them straight.
I always wondered what that is about.
I can think of only one scenario:
The Power Resistor gets very, I mean extremely hot in case of some failure.
It melts, no it boils the solder and threatens to do a "melt down": sink down the solder holes onto the board.
There it could make a short if it touches another component on the way down.
Therefore the legs are bent, so that it can not lower itself onto the board.
Kind regards,
Eric-Jan
