6. Other information
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f. Semiconductor switches such as thyristors or triacs also produce interference
voltages. They occur as a result of non-linear characteristics and finite ignition
voltages. These components must be protected against excessive voltages, for
which mainly varistors, RC combinations or choke coils are used. The use of
zero-voltage switches is also recommended.
The suggestions made represent only a few of the possible ways of protecting a
microprocessor-controlled regulator system from interference. The suggested mea-
sures have the advantage that they will increase the lifetime of the devices as lower
induction voltages (reduced spark formation) will also reduce contact burn.
