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jeff5may
Forum:
Solar Power
11-24-18, 11:42 AM
Replies:
17
PV direct to water heat
Views:
10,292
Posted By
jeff5may
Depends on the design. A lot of igbt stuff uses...
Depends on the design. A lot of igbt stuff uses the igbt connected like a relay. A bipolar drive is inherently less noisy than a mosfet due to the lower capacitance and the pn junction lag, so lots...
Forum:
Solar Power
11-23-18, 10:54 PM
Replies:
17
PV direct to water heat
Views:
10,292
Posted By
jeff5may
The igbt devices aren't a mystical mystery device...
The igbt devices aren't a mystical mystery device at all. If you know the characteristics of the old school bipolar power transistors, that's how igbt transistors handle the high power switching...
Forum:
Solar Power
08-07-18, 07:39 AM
Replies:
17
PV direct to water heat
Views:
10,292
Posted By
jeff5may
If you're running low voltage (24vdc or less),...
If you're running low voltage (24vdc or less), contact arcing is less of a problem and regular AC rated contactors can work. Once the voltage goes up above about 50vdc, the contactors with magnets...
Forum:
Solar Power
08-05-18, 11:00 PM
Replies:
17
PV direct to water heat
Views:
10,292
Posted By
jeff5may
The only real issue in this type of system is the...
The only real issue in this type of system is the switch. Common relay contactors are rated for alternating current and won't live long trying to switch a DC power source. Make sure that you get...
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