Miele H 4080 BM, Technical Information

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Technical Information
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H 408x BM
In microwave cooking, the waves penetrate the food and excite the water and
fat molecules within the food. There is no heat migrating toward the interior
as heat is everywhere all at once because the molecules are excited together
at the same time. This entire heating process is different than ordinary
cooking, as it involves exciting atoms, rather than conducting heat.
Power Adjustment
Output power is adjusted by the control electronics varying the on-off ratio of
current provided to the high-voltage transformer. The transformer output
changes cycle accordingly and the magnetron is then supplied with a varying
on/off cycle of high-voltage power.
Danger – High Voltage!
Even with the appliance unplugged (i.e. circuit breaker shut off), high-
voltage power remains present at the following components and poses a
risk of electrical shock:
- High-voltage transformer (T1)
- High-voltage capacitor (A4)
- Diode (V1)
- Protective diode (V6)
- Magnetron
(G2)
Figure 012-2:
Magnetron and High-Voltage Components
1
High-voltage transformer (T1)
2
Magnetron thermostat (F1/2)
3
Magnetron (G2)
4
Diode (V1)
5
Protective diode (V6)
6
High-voltage capacitor (A4) (w/ internal resistor)