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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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9th Sep 2019, 10:01 pm | #1 |
Hexode
Join Date: Apr 2016
Location: Yeadon, West Yorkshire, UK.
Posts: 251
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Self Resetting Circuit Breaker with 100 Ohm resistor
Hi all, the Rockola jukebox I'm restoring has a free play button that simulates a 10p coin being dropped into the machine. Someone's modified my machine decades ago to have a 2A fuse in the place of a self-resetting circuit breaker. The coin switches activate a corresponding solenoid to make the credit ratchet go a certain number of clicks. The power to these coin switches passes through the breaker first. I'm wanting to know the purpose of this breaker and whether I should stick with the fuse in its place or attempt to find a replacement?
Thanks! |
10th Sep 2019, 4:40 am | #2 |
Nonode
Join Date: Oct 2010
Location: Tintinara, South Australia, Australia
Posts: 2,340
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Re: Self Resetting Circuit Breaker with 100Ohm resistor
First, either one is there to protect the solenoid (and the rest of the machine) in case the solenoid develops a short or jams or there is some other electronic fault that keeps it activated.
The difference between the two: If a fuse blows, you have to physically get inside the machine and change it. If the self resetting fuse trips, it will, as the name suggests, reset itself after a period of time. No climbing inside to change it. As to which one to use - either, they both perform the same function. |
10th Sep 2019, 6:55 am | #3 |
Hexode
Join Date: Apr 2016
Location: Yeadon, West Yorkshire, UK.
Posts: 251
|
Re: Self Resetting Circuit Breaker with 100Ohm resistor
Hi Terry, thanks for the reply, what's the purpose of the 100Ohm resistor? It's not usually in circuit
Thanks Peter |
10th Sep 2019, 10:22 am | #4 |
Nonode
Join Date: Oct 2010
Location: Tintinara, South Australia, Australia
Posts: 2,340
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Re: Self Resetting Circuit Breaker with 100Ohm resistor
I'm not 100% sure, but I think either there may have been a different option to enable free play on some jukeboxes or it was for an additional bit of kit like a flashing 'Free Play' sign.
It's been many many years since I had anything to do with jukeboxes, so it's really stretching the memory bank (for others in Oz reading this, think Leisure and Allied Industries). |