crowbar protection
Posted: Sat Apr 24, 2021 8:00 pm
prevent possible damage on your 12V circuits from your main 48v PSU ( i have bad experience with step down)
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Re: crowbar protection
Posted: Sat Apr 24, 2021 8:41 pm
Good work Rigmo, very useful circuit. I have experimented with a similar design with an old Watson PSU that had no over volt protection. I see you've added an extra buffer transistor from the TL431 to the Triac.
Re: crowbar protection
Posted: Sun Apr 25, 2021 10:15 am
simpler version
Re: crowbar protection
Posted: Wed May 19, 2021 8:38 pm
final crowbar protection PCBs up to 8A and up to 25A. direct indirect pickup voltage protection. (main psu from or before after step-down) stage)
Re: crowbar protection
Posted: Mon Jun 07, 2021 11:07 pm
operate fine..
Re: crowbar protection
Posted: Tue Jun 08, 2021 7:39 am
OK, ......so who else thought this thread was about using a metal crowbar as a weapon for protection? 
Re: crowbar protection
Posted: Tue Jun 08, 2021 9:37 am
Re: crowbar protection
Posted: Tue Jun 08, 2021 10:45 am
Re: crowbar protection
Posted: Tue Jun 08, 2021 4:55 pm
of course, one should also protect oneself from excessive stupidity. hahaha
for example you have a 48V power supply and you need to protect the fans and the exciter pll ... everything works at 12V from the breakdown of the power supply step down converter...
there is also a solution to protect the amplifier from voltage surges over 48V
overvoltage Crowbar protection version 8A, 25A and 100A
for example you have a 48V power supply and you need to protect the fans and the exciter pll ... everything works at 12V from the breakdown of the power supply step down converter...
there is also a solution to protect the amplifier from voltage surges over 48V
overvoltage Crowbar protection version 8A, 25A and 100A
Re: crowbar protection
Posted: Tue Jun 08, 2021 7:22 pm
Re: crowbar protection
Posted: Tue Jun 08, 2021 10:32 pm
bTON-uk - that is your reasoning.... not my words!
funny to you, it's not for me ... for you the first thought of crowbar protection is something completely different ... for me there is only one thing to protect the transmitter from burnout ... you resonate on other waves and I'm really sorry ...
yes, you have super abilities if you take down so fast or your just chasing your thinking? best regards..
funny to you, it's not for me ... for you the first thought of crowbar protection is something completely different ... for me there is only one thing to protect the transmitter from burnout ... you resonate on other waves and I'm really sorry ...
yes, you have super abilities if you take down so fast or your just chasing your thinking? best regards..
Re: crowbar protection
Posted: Tue Jun 08, 2021 11:17 pm
I think you are misunderstanding me!rigmo wrote: ↑Tue Jun 08, 2021 10:32 pm bTON-uk - that is your reasoning.... not my words!
funny to you, it's not for me ... for you the first thought of crowbar protection is something completely different ... for me there is only one thing to protect the transmitter from burnout ... you resonate on other waves and I'm really sorry ...
yes, you have super abilities if you take down so fast or your just chasing your thinking? best regards..
What I meant was, here in the UK, thieves will often take transmitters very quickly after you install them on a roof. For that reason, people sometimes put the transmitter in a safe to stop thieves taking it. They can disappear quite quickly otherwise.
I didn't mean to sound threatening like I was going to take your rig!
Re: crowbar protection
Posted: Wed Jun 09, 2021 8:08 am
Oh god now look what I've started haha....
Re: crowbar protection
Posted: Wed Jun 09, 2021 3:32 pm
Re: crowbar protection
Posted: Thu Jun 10, 2021 11:36 pm
you moved the world with a lever 