Hi all. I could really use some help trying to decypher this 2d21 thyratron photoelectric switch schematic. I'm hoping that someone here has dealt with these before.
I took some pics from the test and tried to recreate the schematic as best I could with the info i had (See attachments). Sorry the pics are so bad, but I was trying to not get caught taking them lol. Im not sure which lines hook up where on the 2D21, and im not sure of the ratings on R4, R5, C3, & the relay
These are the questions asked about the schematic that I'm having trouble with:
1. Which component allows for the influence of background illumination?
A. R1
B. R2
C. R4
D. R5
E. C2
2. The function of the relay in the circuit is to:
A. act as the switch for the external circuit
B. limit the 2D21 tube plate current
C. Short out C3 when necessary
D. protect the 2D21 tube from possible damage due to accidentally high voltage
E. protect the photocell PT from very bright light sources
3. The resistor R3 is used to:
A. regulate the anode voltage of the thyratron
B. regulate the cathode voltage
C. adjust the bias on both grids
D. adjust the bias on the first grid
E. adjust the bias on the second grid
I could really use any help I can get trying to work through this. I really appreciate your time.
I took some pics from the test and tried to recreate the schematic as best I could with the info i had (See attachments). Sorry the pics are so bad, but I was trying to not get caught taking them lol. Im not sure which lines hook up where on the 2D21, and im not sure of the ratings on R4, R5, C3, & the relay
These are the questions asked about the schematic that I'm having trouble with:
1. Which component allows for the influence of background illumination?
A. R1
B. R2
C. R4
D. R5
E. C2
2. The function of the relay in the circuit is to:
A. act as the switch for the external circuit
B. limit the 2D21 tube plate current
C. Short out C3 when necessary
D. protect the 2D21 tube from possible damage due to accidentally high voltage
E. protect the photocell PT from very bright light sources
3. The resistor R3 is used to:
A. regulate the anode voltage of the thyratron
B. regulate the cathode voltage
C. adjust the bias on both grids
D. adjust the bias on the first grid
E. adjust the bias on the second grid
I could really use any help I can get trying to work through this. I really appreciate your time.
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