Acuben
- 61
- 0
Finding resistance in a vacuum (triode??)
Suppose that we decided to provide the grid bias emf (-8volts) with a grid bias resistor, R(b),
inserted between point B and the cathod. (E(c) is to be removed from the circuit, of course.)
Assume that there is a negleigible current in the grid circuit.
The 25k Ohm load resistor is replaced by a resistor R(a).
If the plate current is still 5.6 mA, what are R(b) and R(a)?
note: it does refer some information from previous problem. There was 8volt battery on
the grid (left part of the circuit) and the current was 5.6 mA (same as here).
R(a) used to be 25k Ohm.
I don't think it matters that much though...
If something from the previous problem needs to be mentioned, let me know.
http://yfrog.com/03vacuumg
answer: (k=1000)
R(a)=23.6k Ohms
R(b)=1.43k Ohms
load line eq: V=E-IR
I really don't know how to set it up in the first place. I spent like 2 hours on this (yes it wasn't a wise decision...^^;;)
I have 1 equation and 2 unknowns...
Homework Statement
Suppose that we decided to provide the grid bias emf (-8volts) with a grid bias resistor, R(b),
inserted between point B and the cathod. (E(c) is to be removed from the circuit, of course.)
Assume that there is a negleigible current in the grid circuit.
The 25k Ohm load resistor is replaced by a resistor R(a).
If the plate current is still 5.6 mA, what are R(b) and R(a)?
note: it does refer some information from previous problem. There was 8volt battery on
the grid (left part of the circuit) and the current was 5.6 mA (same as here).
R(a) used to be 25k Ohm.
I don't think it matters that much though...
If something from the previous problem needs to be mentioned, let me know.
http://yfrog.com/03vacuumg
answer: (k=1000)
R(a)=23.6k Ohms
R(b)=1.43k Ohms
Homework Equations
load line eq: V=E-IR
The Attempt at a Solution
I really don't know how to set it up in the first place. I spent like 2 hours on this (yes it wasn't a wise decision...^^;;)
I have 1 equation and 2 unknowns...
Last edited: