| Line 1 was replaced by line 1 |
| - !!Switch heater test with MA09 |
| + !MA09 Switch Heater Test Results |
| Line 3 was replaced by lines 3-7 |
| - !Results: |
| + The switch heater output is specified 0-100 mA at 100 Ohm, which gives |
| + a maximum heater power of 1 W. The MA09 switch heater resistivity is |
| + 205 Ohm. As the current source has a limited voltage (17 V), the full current |
| + over the heater is no longer 100 mA, but only 83 mA. However, together with |
| + the increased resistivity, we get an maximum power of 1.41 W. |
| Line 5 was replaced by line 9 |
| - * Without lamda stage (coil at 4.2 K), a heater power of 0.81 W (13 V, 63 mA) |
| + * Without lambda stage (coil at 4.2 K), a heater power of 0.81 W (13 V x 63 mA) |
| Line 7 was replaced by line 11 |
| - * With lamda stage (coil at 2.3 K), a heater power of 1.06 W (14.7 V, 72 mA) |
| + * With lambda stage (coil at 2.3 K), a heater power of 1.06 W (14.7 V x 72 mA) |
| Lines 9-11 were replaced by lines 13-15 |
| - * The maximum switch heater power (205 Ohm switch heater) is 1.41 W (17 V x 83 mA). |
| - * With the coil at 2.3 K it takes about 5 seconds from starting the heater until |
| - the switch goes off (therefore the usual 30 sec. delay is very conservative). |
| + * With the coil at 2.3 K it takes about 5 seconds from starting the heater at maximum |
| + power (1.41 W) until the switch goes off (therefore the usual 30 sec. delay is very |
| + conservative). |
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