CHAPTER 3
3.4.8 Operator Panel Circuitry
Figure 3-103 shows the circuit elements contained on the Operator Panel Board. The Micro Controller supplies or receives the signal shown.
| Vcc |
|
| 330 | J6 |
| D1 | |
|
| |
L1 | 330 | D2 |
L2 | 330 | D3 |
| ||
IN2 |
| BTP1 |
IN3 |
| Contact ILS |
Figure 3-10. Operator Panel Circuitry
3.4.9 Power Regulator Circuitry
Figure 3-11 shows the power circuitry on the CPU Board. Regulator chip U1 receives power from the Main Power Supply at J2 and delivers plus 5 volts (Vcc) to the CPU Board. Note that the Main Power Supply also delivers plus 24 volts to K1 on the CPU Board.
+24 Volts to K1
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|
|
| U1 |
|
| D COL | SWITCH C | |
|
|
| ||
|
| 1 SENSE | ||
J2 |
| Vin |
| SWITCH E |
6800µF |
|
|
| |
4 |
|
|
| |
3 | 220pF | 47µF |
| CT |
2 |
| |||
|
|
| GND | |
1 |
| GND |
| |
|
|
| COMP | |
| 330µH |
|
|
| Vcc |
| 470µF | 3.6k |
270pF | 100nF | |
33pF |
| |
3.3nF | 1.2k | |
|
| GND |
