Programmable AC Source 61601/61602/61603/61604 User’s Manual
3-16
Resistor of
Discharger
Fixture Board
Bridge
Diode
Output
DC OUTPUT
61500 AC SOURCE
Illustration for fixture:
1. Bridge diode: Because of internal control circuit of AC source, if users connect more than
20uF capacitor at output side, it may cause output unstable. It’s better to use bridge
diode for isolating external capacitor. Also, it could prevent from wrong connection for
polarity of output DC level. But, it will cause 1.6V drop when adds the bridge diode.
(The user can compensate the output DC voltage by setting voltage level. For example,
the user can program 11.6V in order to get 10 V on the output of fixture board.)
2. L and high frequency capacitor: They can filter high frequency ripple and noise. But it is
not necessary if doesn’t care ripple noise.
3. C and SW: It could switch off if UUT already has capacitor.
4. Discharger resistor and SW: It could discharge the capacitor for avoiding remnant
voltage to hit user when output off. But, users need to consider about power
consumption, the discharger resistor power should be enough for it.
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