Hi everyone !
I'm currently learning how bipolar transistors work.
In the same time, I'm building a tube preamp and the PSU of my preamp is based on the G9 PSU.
Right now, I'm working on the phantom power. I plan to use the same circuit as written on the schematics of the G9. A voltage multiplier which will be "regulated" by a zener diode (56V) and a NPN.
My question deals with the NPN of this PSU. What will EXACTLY happen if the phantom power is short-circuited. What if I "forget" the 10k (R42) output resistance ? In those cases, what will happen to the transistor (blocked / saturated / other ) ? And concerning the current flowing into the zener ?
Please, give me all the details you can
Thank you in advance !
I'm currently learning how bipolar transistors work.
In the same time, I'm building a tube preamp and the PSU of my preamp is based on the G9 PSU.
Right now, I'm working on the phantom power. I plan to use the same circuit as written on the schematics of the G9. A voltage multiplier which will be "regulated" by a zener diode (56V) and a NPN.
My question deals with the NPN of this PSU. What will EXACTLY happen if the phantom power is short-circuited. What if I "forget" the 10k (R42) output resistance ? In those cases, what will happen to the transistor (blocked / saturated / other ) ? And concerning the current flowing into the zener ?
Please, give me all the details you can
Thank you in advance !