DH3-91 / CV2302 CRT
|
The CRT measures 96x28mm
overall, and 25mm across the screen. It has an 8 pin base. |
Heater voltage |
6.3V |
Heater current |
300mA |
Max A3 voltage |
1000V |
Min A3 voltage |
350V |
Max heater/cathode voltage |
250V |
Average X-plate sensitivity |
95/Va3 mm/V |
Average Y-plate sensitivity |
110/Va3 mm/V |
Pin |
Function |
1 |
Heater |
2 |
A1, A3, Y2 and conductive
coating |
3 |
Y1 |
4 |
X2 |
5 |
Grid |
6 |
X1 |
7 |
Cathode and A2 |
8 |
Heater |
With the CRT mounted horizontally
with pin 5 uppermost, a positive voltage applied to pin 6 deflects
the
spot horizontally to the left and a positive voltage applied to pin 3 deflects
it vertically upwards.
Trace brightness and definition
decrease rapidly with decreasing A3 voltage, so a minimum of 350V is recommended.
However a voltage as low as 250V may be used if the ambient light level
is low. NB in such conditions the brightness of the trace should be kept
low as low-energy electron beams are particularly liable to burn the screen. |
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