Michael Martens
Comentado en los Estados Unidos el 28 de marzo de 2025
Great product. We've had it for a while now and no issues so far. We use this for a branding iron in order to control the temperature (by controlling the voltage on the transformer). Highly recommend
Anthony Soos
Comentado en los Estados Unidos el 24 de enero de 2025
Allows me to control and balance the charge rate on my solar battery banks. This keeps my battery chargers from overheating. The sun doesn't always shine so I use generator power to supplement in the event of a power outage.
Lazlo
Comentado en los Estados Unidos el 17 de junio de 2024
Look, this is a low capacity model. I use it to regulate a small cooling fan. For that, it’s OK. I wouldn’t dream of using it to fire up some aged tube amps as it doesn’t have the current capacity. So for lights, fans, and other low power devices this is a handy thing to have. Build quality seems passable, but I haven’t had it very long.
Ricardo P.
Comentado en México el 19 de agosto de 2022
El indicador de voltaje es muy impreciso, por lo demás excelente
west
Comentado en los Estados Unidos el 31 de diciembre de 2018
the VU meter matches the dial labeling but nether of those match actual output voltage.the dial is labeled in increments of 13 volts and for every increment +1v or +2v is added to the actual voltage so at 13v dial setting I get 15v, at 26v dial setting I get 30v, etc. at 130v dial setting I get 148v output.output spikes -1.3v at max output (148v) and -0.6v at near min setting (2v) periodically (~2hz, smooth spike). aside from this spike voltage is +/- 0.1v for about 70% of the time, the other 30% being that spike happening.attached is a multi meter test for the dial sweep. dial was turned from min to max to min at a more or less constant rate a few times. voltage spike happens with my unit at around 25v and its significant. you can see it in the picture. the rest of the transition from min voltage to max is smooth. scale of the graph is 0v-160v mean is 80v.also attached is oscilloscope reading of the output at 2v. my scope is only rated for 10v max and im not going to push it with this unit. shows 60hz +/- 0.1hz with a periodic spike in hz every so often which makes it dip to sub 20hz. spike is super short (a few microsecond or less is my guess, didn't bother to try and catch it on the scope to measure it explicitly.) and happens less than once per second so no big deal. you can see that spike measured in the statistics frame on the oscilloscope image under the Min column, average column is still close to 60z so its not a significant spike. if you care about a spike that short you probably care about the waveform too - scope shows a pretty clean saw waveform, not sine wave. this aint guna be lab gear.all in all, for the price, its fine. its not supposed to be lab equipment and as long as you mind the actual output voltage it should work well. im pretty happy with it.UPDATE:been running 24/7 for 11 months, no issues at all.
R. Cheek
Comentado en los Estados Unidos el 20 de septiembre de 2018
I have been needing a Variac for the test bench for quite a while and looked for a used one at a lot of hamfest bone yards. Finally broke down and ordered this one from Amazon. It works well and is pretty sturdy feeling. The small meter is useful for getting your line voltage in the ball park but you would probably want to use an external meter for anything that requires good accuracy. I would recommend this Variac for a good low cost solution.