Post by Jim on Sept 14, 2018 10:31:35 GMT
I just bought an adjustable 12v voltage converter to make a 7.5v supply for our radio
Afaik a voltage converter uses less power than an inverter.
www.amazon.co.uk/gp/r.html?C=148LYIXGS6DN9&K=3PO9H7SJ54CGR&M=urn:rtn:msg:20180831085953e969b29a7a244ba3bb8416a39250p0eu&R=75D77FEFULZ4&T=C&U=https%3A%2F%2Fwww.amazon.co.uk%2Fdp%2FB01KFJHPN0%3Fref_%3Dpe_3187911_248764861_302_E_DDE_dt_1&H=JJDCPOPLQKRFOIT11MIRZAGWKGGA&ref_=pe_3187911_248764861_302_E_DDE_dt_1
I had to wire it up, find an old lead and plug to fit radio, and set the voltage with the adjustment screw on the potentiometer, using a meter. A small switch on the 12v in, I now have a permanently wired feed for the radio, mounted in a wooden box on the wall next to radio shelf. I'm considering getting another for the laptop.
I bought something similar, more sophisticated, a while back, with a voltage display, in and out, but it didn't seem to work. Having played with the new one, I've realized the screw on the potentiometer isn't working, so going to get a new one and solder it in, then use the wire and changeable plugs from an old laptop charger, so I can change the voltage and plug to suit the device.
Afaik a voltage converter uses less power than an inverter.
www.amazon.co.uk/gp/r.html?C=148LYIXGS6DN9&K=3PO9H7SJ54CGR&M=urn:rtn:msg:20180831085953e969b29a7a244ba3bb8416a39250p0eu&R=75D77FEFULZ4&T=C&U=https%3A%2F%2Fwww.amazon.co.uk%2Fdp%2FB01KFJHPN0%3Fref_%3Dpe_3187911_248764861_302_E_DDE_dt_1&H=JJDCPOPLQKRFOIT11MIRZAGWKGGA&ref_=pe_3187911_248764861_302_E_DDE_dt_1
I had to wire it up, find an old lead and plug to fit radio, and set the voltage with the adjustment screw on the potentiometer, using a meter. A small switch on the 12v in, I now have a permanently wired feed for the radio, mounted in a wooden box on the wall next to radio shelf. I'm considering getting another for the laptop.
I bought something similar, more sophisticated, a while back, with a voltage display, in and out, but it didn't seem to work. Having played with the new one, I've realized the screw on the potentiometer isn't working, so going to get a new one and solder it in, then use the wire and changeable plugs from an old laptop charger, so I can change the voltage and plug to suit the device.
