In a class AB amplifier , where do they put the milliohm resistors mostly? they either use the milliohm resistor to do current sensing or to act like a fuse
Do you know any other circuits that uses milliohm resistors like a fuse or current sensing?
I believe it would be more helpful to everyone, if the you created a new Thread with a specific question about a Topic, rather than this never ending 'Misc' Thread.
The reason being, is that if any member does a Forums Search on a topic, this Thread will keep appearing in the listing and he/she will have to trawl thru hundreds of Posts in order to find the required information being sought.
Today at work I have noticed that when One Decoupling cap is backwards it will pull down the Rail voltage, why does it pull down the DC buss rail voltage
They have multiple Decoupling Caps from Vcc to Ground, if one of the Electrolytic Capacitor is put in Backwards it will pull down the VCC to a lower voltage
12vdc VCC, if one of the decoupling caps is put in backwards it will pull it down to 10 volts or lower , but why?
When an Electrolytic capacitor is in backwards it acts like a short or open?
That decoupling cap is likely a Tantalum capacitor. They are polarized. They don't like surges either. Trash the cap and install a new one in it's place.
My Manager said that when you put a Polarized Capacitor in Backwards it acts like a Resistor, that's why the VCC rail voltage sinks and gets pulled down
Why does it act like a Resistor when a polarized capacitor is in reverse polarity?
From the link above "This is because a reverse-bias voltage above 1 to 1.5 V[4][5][6] will destroy the center layer of dielectric material via electrochemical reduction (see redox reactions). Following the loss of the dielectric material, the capacitor will short circuit, and with sufficient short circuit current, the electrolyte will rapidly heat up and either leak or cause the capacitor to burst, often in a spectacularly dramatic fashion."