5 replies to this topic

[mvahora]

I've got a few items I'm installing in my mini such as a Heater, a stereo etc.

 

Do I need to provide these devices a stable 12V by running the feeds through a 12V stabilizer? How do I know if devices that are sold as 12V can deal with fluctuating voltages in a 14.4V car

 

I am aware that the smiths gauges need a 10V stable supply hence why they have a 10V stabilizer. 

 

Thanks  

[Deeppockets]

Are you looking to provide 12v from a 12v+ supply or provide 12v on a wider range (i.e. while cranking)? The first can be achieved with a relatively simple linear regulator which drops the voltage and dumps voltage drop (x current) as heat, the second will need a DC-DC converter.

 

Current draw is also a key consideration, what is your planned max current/power? 

[sonscar]

If they are designed for car fitting they will almost certainly be OK.If they fail they were probably no good to start with.Steve..

[nicklouse]

They will be fine with the cars 12v system.

[Spider]

The types of Accessories you've mentioned generally have their own stabaliser / regulator internally, if they need one to operate. While they have name plate voltage ratings of 12 or 13.8V, all that I know of are actually rated to 16 volts and some a bit higher.

In short, just connect them up.

Even the most latest range of Smith Gauges now don't need a stabaliser.

[Tornado99]

Yes most all modern electric devices, certainly digital devices, use DC voltage regulators internally. No additional regulators after the cars alternator or battery are needed.