Early Electronic Television
HMV 1800 Valve List
Single channel superhetrodyne, 9 inch triode CRT. Magnetic focus and
deflection, approx. 50 degrees. |
|
Function |
Quan. |
Type |
Notes |
| |
|
|
|
| RF amplifier |
1 |
Z62 |
|
| Oscillator/mixer (frequency changer) |
1 |
X41 |
|
| Video IF amplifier |
3 |
KTZ41 |
3-6 mHz |
| Video detector |
1 |
D42 |
|
| Video amplifier |
1 |
KTZ41 |
|
| Sync separator |
1 |
D63 |
|
| Sync amplifier |
1 |
KTZ63 |
|
| Horizontal (line) oscillator |
1 |
KTZ63 |
|
| Horizontal (line) output |
1 |
KT44 |
|
| Vertical (frame) oscillator |
1 |
KTZ63 |
|
| Vertical (frame) output |
1 |
KT61 |
|
| Audio IF amplifier |
1 |
KTW61M |
2.5 mHz |
| Audio detector/noise limiter |
1 |
D63 |
|
| Audio amplifier |
1 |
DH63 |
|
| Audio output |
1 |
KT61 |
|
| Rectifier (HT) |
1 |
U52 |
|
| HV (EHT) rectifier |
1 |
U16 |
3500 VDC |
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|
