Early Electronic Television
Pye 817 Valve List
Television: Single channel TRF. The 817 originally had a Hivac
T5M CRT. Our set came with a Emiscope 3/1 triode. Magnetic focus and deflection,
approx. 45 degrees.
|
|
Function |
Quan. |
Type |
Notes |
| |
|
|
|
| Video
RF amplifier |
3 |
EF6 |
|
| Video detector |
2 |
EA50/T6D |
Push-pull |
| Audio RF amplifier |
2 |
EF6 |
|
| Audio detector |
1 |
EA50/T6D |
|
| Sync separator |
1 |
EF6 |
|
| Horizontal (line) oscillator |
1 |
6J5 |
* |
| Horizontal (line) output |
1 |
6V6 |
* |
| Vertical (frame) oscillator/output |
1 |
6153T |
|
| Rectifier (HT) |
1 |
UU5/IW3 |
|
| High Voltage (EHT) |
1 |
HVU1/HVR2 |
2500 VDC |
*Factory (?) replacement for a Hivac AC/TZ, a
triode-tetrode specially made for the set.
Factory service notes
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