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Reviews (4)

May 08, 2019
Adequate for the purpose
Purchased this bulb for creating a projected bias lighting (5000K) for an IPS LCD display.
Base Stamped Current (48ma) doesn't mach the calculated current : 2.8W/120V = (23ma)???

May 21, 2017
GPC-3020, used
0 of 1 found this helpful This is a basic Universal Lab Low Voltage PS. If one knows his needs and doesn't require bells & whistles, it is sufficient. It is well build with quality components. The design is very classic, similar units have been designed and manufactured by Lambda USA 30 years ago...
To optimize size & weight, the GW-3020 uses a 24VDC internal cooling fan. Seems that is no provision for controlling the internal PS temp by it's fan speed, neither to be switched On-Off by a thermal switch, therefore it is noisy (my case). This statement is based on the unit i have purchased as used, no factory spec for fan either.
Controlling the fan is not sufficient, there has to be an alarm displayed also if the fan doesn't function correctly. For all these considerations & cost, Instek probably didn't provide such function in this model.
My preference for an electrical tool, specially if I purchase it as used is simplicity (= quality)!

Mar 31, 2017
Replaced the microswitch in a Panasonic microwave oven. It was a direct replacement of the original, therefore is no reason not to work.