Hi, I have got into audio electronics (tubes and transistors)...I am very safety conscious because I have little understanding of whats what. I always use a 150 to 250K bleeder resistor in my power supplies. However, unless I put a meter on the power line , I am not aware of the voltage still in the cap. I worry about being caught out.
So I wonder if I could also add / or even substitute a 15k resistor then LED wired in series from the power rail to the ground rail.
If I take a 10000uf smoothing cap as an example
then parallel the 15k resistor and a red led to ground
The forward voltage drop of the led is 1.9volts
So at switch off. As the capacitor discharges, will the LED remain bright until there is 1.9volts of charge left in it?
So if my reasoning is right. In a 10000uf cap which has 1.9 volts still in it (ie the led has dimed) would that capacitor still hurt you if you caused a short?
Is a 10000uf capacitor at 1.9volts more dangerous than a 4700uf capacitor at 1.9 volts ??
Sorry if my question sound stupid
So I wonder if I could also add / or even substitute a 15k resistor then LED wired in series from the power rail to the ground rail.
If I take a 10000uf smoothing cap as an example
then parallel the 15k resistor and a red led to ground
The forward voltage drop of the led is 1.9volts
So at switch off. As the capacitor discharges, will the LED remain bright until there is 1.9volts of charge left in it?
So if my reasoning is right. In a 10000uf cap which has 1.9 volts still in it (ie the led has dimed) would that capacitor still hurt you if you caused a short?
Is a 10000uf capacitor at 1.9volts more dangerous than a 4700uf capacitor at 1.9 volts ??
Sorry if my question sound stupid