12 to 24v converter

[Andrew]

Got an old machine with 4 solenoids. They all work one at once. They are 24v 1.5A solenoids.

I used one of these

Car DC 12v to 24v Step Up Converter 10A 240W Regulator Power Supply Voltage Inverter Changer Adapter for Vehicle Boat Truck Van Boat Solar System DC 9-20V Inputs 24V Output https://www.amazon.co.uk/dp/B07Q2CHC2Q/ref=cm_sw_r_cp_api_i_JCWlDbEA5AKR6

And some switches to work the solenoids and it worked for a while.

But now the converter is only outputting 12v. Any ideas? Is it just poor quality converter?

 

[Kevm]

Don't think your converter is big enough, google ohms law converter and put in 24v x 6a and you get 144w and you need at least double that going into your inverter/converter

 

[Andrew]

Don't think your converter is big enough, google ohms law converter and put in 24v x 6a and you get 144w and you need at least double that going into your inverter/converter

Why? Only one solenoid at once, so need 24v 1.5A. (36w). That one outputs 24v 10A, 240w.

 

[Kevm]

Sorry, didn't read your question carefully enough, yes sounds like a poor quality unit but should be big enough.
You could open it up and have a look inside but even if you spot something burned out with modern stuff you can't just change a component.

 

[Andrew]

Sorry, didn't read your question carefully enough, yes sounds like a poor quality unit but should be big enough.
You could open it up and have a look inside but even if you spot something burned out with modern stuff you can't just change a component.

Any ideas where I can get a similar unit but better quality?

 

[Kevm]

Not really, you will just have to search the internet for a british or euro made one.

 

[gmgmgm]

Any ideas where I can get a similar unit but better quality?

No, but when you do find one: heat is the enemy of these- make sure the heatsink is bolted to something large, metal and cool so it doesn't warm up. Cheaper ones can be very inefficient, wasting over 50% of the energy as heat.

 

[Timbo]

Bear in mind solonoids / relays will induce a massive emf each time they are turned off if there is no snubber / diode across them, which any electronics will not like, on top of that they are a purely inductive load, again not good- ideally you need a constant small purely resistive load e.g.. a filament bulb across the converter all the time...

 

[Kevm]

Just a last thought, could you change the solenoids for 12v ones, be a lot easier

 

[Andrew]

Just a last thought, could you change the solenoids for 12v ones, be a lot easier

That might happen yet