DB54 - 2254 style compressor {update 22.10.19}

[Brian Roth]

The highest voltage anywhere in a 2254 will be 24 Volts from the power supply. The voltages in that section of the BA185 will be a tiny fraction of that.

Bri

 

[JosephGaetanoPapa]

Good point Migs 31!

 

[JosephGaetanoPapa]

The highest voltage anywhere in a 2254 will be 24 Volts from the power supply. The voltages in that section of the BA185 will be a tiny fraction of that.

Bri

Thanks Brian, I will get the ones you mentioned for the second kit I have.

 

[JosephGaetanoPapa]

Hi everyone,

I have a question on the BA191 pcb build; According to the BOM C14 is 5uf/25V electrolytic capacitor in radial configuration, but I can only find 4.7uf/25V in radial. I did find 5uf/25V in axial configuration. What do you think? Which one should I use?

And thanks Migs, I definitely am having fun!

 

[scott2000]

if height/size is ok do you have enough leads on the axial to just mount them vertically? I've done it before with some heat shrink added to the leads

 

[JosephGaetanoPapa]

if height/size is ok do you have enough leads on the axial to just mount them vertically? I've done it before with some heat shrink added to the leads

Thanks for your reply Scott. So I assume that you are saying there would be an advantage to using the 5uf over the 4.7uf. Is my assumption correct?

 

[scott2000]

Thanks for your reply Scott. So I assume that you are saying there would be an advantage to using the 5uf over the 4.7uf. Is my assumption correct?

I'm not familiar with this project. I'm pretty sure 4.7uf caps were available when this project was realized .. Couldn't tell you why they wouldn't use them. Maybe someone familiar with this will have an answer. Seems like pretty tight tolerance....

 

[JosephGaetanoPapa]

I'm not familiar with this project. I'm pretty sure 4.7uf caps were available when this project was realized .. Couldn't tell you why they wouldn't use them. Maybe someone familiar with this will have an answer. Seems like pretty tight tolerance....

Thanks Scott. I'm hoping...

 

[thelivingroom]

Hi everyone,

I have a question on the BA191 pcb build; According to the BOM C14 is 5uf/25V electrolytic capacitor in radial configuration, but I can only find 4.7uf/25V in radial. I did find 5uf/25V in axial configuration. What do you think? Which one should I use?

And thanks Migs, I definitely am having fun!

In situations like this I’d go with the 4.7uF, order 10+ for the price break from Mouser, then measure them and pick the one(s) closest to 5uF if I want to be precise. I had to do this same thing recently while rebuilding my Farfisa. Depending on its function in the circuit, it may not matter though. With the 20% tolerance accounted for, I’d imagine they can be anywhere from 4-6uF and be fine.

 

[Ilya]

4.7 vs 5 uF are basically the same. One is an older standard, another is a newer one. You can put in whatever you have at hand

 

[JosephGaetanoPapa]

In situations like this I’d go with the 4.7uF, order 10+ for the price break from Mouser, then measure them and pick the one(s) closest to 5uF if I want to be precise. I had to do this same thing recently while rebuilding my Farfisa. Depending on its function in the circuit, it may not matter though. With the 20% tolerance accounted for, I’d imagine they can be anywhere from 4-6uF and be fine.

I definitely will do that! Thanks for the advice.

 

[JosephGaetanoPapa]

4.7 vs 5 uF are basically the same. One is an older standard, another is a newer one. You can put in whatever you have at hand

Thanks for the perspective Ilya!