Low Voltage Inverter For OEM Device
Low Voltage Inverter For OEM Device
(OP)
Anyone have experience with any suppliers of either custom or off the shelf low votage inverters? We are in need of an inexpensive 12 vdc to 24 vac inverter in the 75 watt output range to be powerewd from a compact rechargeable 12vdc power pack.
Bob Smith
Operations/Engineering
Northeast Building Controls
Bob Smith
Operations/Engineering
Northeast Building Controls





RE: Low Voltage Inverter For OEM Device
RE: Low Voltage Inverter For OEM Device
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RE: Low Voltage Inverter For OEM Device
RE: Low Voltage Inverter For OEM Device
RE: Low Voltage Inverter For OEM Device
RE: Low Voltage Inverter For OEM Device
Why would a controller needing less than 75W need AC?
Does it output 24Vac? Does it have a motor in it? It probably doesn't have weird AC logic inside it. Internally it requires DC. It probably rectifies the 24VAC immediately. Why not feed it with 24Vdc? 12V to 24Vdc step up power supplies are as common as pennies.
RE: Low Voltage Inverter For OEM Device
The controller utilizes 10 watts internally and the remainder is for driven loads.The controller does immediately rectify to 24 vdc, also 5.12 vdc, sources both 0-10vdc and 0-20 ma dc analog outputs plus drives hot switched triacs. Additionaly any peripheral devices controlled by the device require 24 vac. We do not want to modify the controller used because it is already available to over 120 of our brother dealers worldwide (our intended market). Maybe I just have to give in to the weight and space problem and utilize a 12vdc to 120vac inverter, available locally at about $19 US for 75 watt and drive a 120 vac to 24 vac transformer available for around $15 US. Thanks to all who reply. Please keep up the attempt at a solution. Your advice is greatly appreciated.
RE: Low Voltage Inverter For OEM Device
RE: Low Voltage Inverter For OEM Device
There are few ways to generate the sine too: function generator IC; EPROM & DAC; Wein bridge; etc. The method you use will depend on the accuracy you need. The function generator IC might be the best option since you will need neither crystal frequency precision nor low THD.
If you are worried about efficiency, a class D amplifier design would be a little more complex but have much better efficiency.
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RE: Low Voltage Inverter For OEM Device
Gives nice (ish) sinewaves which are crystal controlled.
RE: Low Voltage Inverter For OEM Device
yours