A small box for an on-site DC clutch tension control on a Clarke clutch.
The job only needed 12 V DC at about 0.9 A with a basic tension adjust. The original power supply and tension unit would have cost over £500; a £10 DC supply, a £10 PWM controller and a £6 display did the same job — and all was well in the world again.
License
Released under CC BY-NC-SA 4.0.
