TC SPARK BOOSTER MINI  [schematic]

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Re: TC SPARK BOOSTER MINI

Postby rcustoms » 14 May 2018, 21:20

Ichabod_Crane wrote:Hi!
I'd like to ask you, is this schematic the same of the original TC Electronic? And is it verified?

I also want to link this layout:
http://effectslayouts.blogspot.it/2017/ ... -mini.html
It's labeled as UNverified, but should be verified by an user, though the Gain pot could be reversed. This layout use the 500k gain pot, so it included the 100pF cap.

I need a verified version.

Thanks!

hi,values verified ,oops my mistake gain pot 100k ,and interprete as you wish the right position
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Re: TC SPARK BOOSTER MINI

Postby rcustoms » 14 May 2018, 21:26

original gain schema

spark.jpg
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Intripped (14 May 2018, 22:39), Manfred (15 May 2018, 00:24), sixthfloor (16 May 2018, 10:00)
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Re: TC SPARK BOOSTER MINI

Postby Ichabod_Crane » 19 May 2018, 14:18

Thank you.
1. In the schematic there's a cap labeled C2 - 4.7k, I guess it's a 4.7uF.
2. Between the protoboard layout and the schematic I found different transistors, because the BC849c and BC859C are probably smd type.
3. The the diode should be for the reverse polarity protection: in the schematic it's in serie and in the layout it's across the ground.
4. In the layout the 100nF filter cap is missing. Maybe with a pair of move we van find the space to include it.

I see who built the layout had find an "output overload". Maybe it was caused by the 500k pot? Now we know it's 100k.
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Re: TC SPARK BOOSTER MINI

Postby rcustoms » 19 May 2018, 17:34

Ichabod_Crane wrote:Thank you.
1. In the schematic there's a cap labeled C2 - 4.7k, I guess it's a 4.7uF.
2. Between the protoboard layout and the schematic I found different transistors, because the BC849c and BC859C are probably smd type.
3. The the diode should be for the reverse polarity protection: in the schematic it's in serie and in the layout it's across the ground.
4. In the layout the 100nF filter cap is missing. Maybe with a pair of move we van find the space to include it.

I see who built the layout had find an "output overload". Maybe it was caused by the 500k pot? Now we know it's 100k.


I, mr ichabot

1. yes is 4.7uf
2.the right one´s BC849C
3.the diode correct is in serie
4.which layout,mine ?
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Re: TC SPARK BOOSTER MINI

Postby Jan1966 » 19 May 2018, 19:30

Build it or breadboard it. Then verify it yourself. Not many components if you are worried about the cost.
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Re: TC SPARK BOOSTER MINI

Postby Ichabod_Crane » 20 May 2018, 09:19

rcustoms wrote:[...]
3.the diode correct is in serie
4.which layout,mine ?
[...]


3. I thought that a diode in serie and a diode across the ground do the same work. I also supposed that in serie, the diode, drops a bit of voltage (even if in this case we already have a 47R in serie). Anyway, these two way can have make some difference?
4. And, I'm sorry :slap:, I was talking about the layout I linked early: http://effectslayouts.blogspot.it/2017/ ... -mini.html You can see the 500k pot, how I asked, can be that the cause of the extra boosting detected? I'm not sure, I can't get it. :hmmm:

Did you build your layout?

Jan1966 wrote:Build it or breadboard it. Then verify it yourself. Not many components if you are worried about the cost.

Thank you, Jan1966. Honestly, the pedal wouldn't be for me, but for a friend of mine, and though I know the cost are not high at all, I'll never make to pay my friend, and at the same time I don't know if want to spend for me, right now. I have a cheap breadboard, but even cheapers jumpers, and I'm not very confortable with it. But, maybe I could use it heavily this time and see what happen.
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Re: TC SPARK BOOSTER MINI

Postby rcustoms » 20 May 2018, 19:59

Ichabod_Crane wrote:
rcustoms wrote:[...]
3.the diode correct is in serie
4.which layout,mine ?
[...]


3. I thought that a diode in serie and a diode across the ground do the same work. I also supposed that in serie, the diode, drops a bit of voltage (even if in this case we already have a 47R in serie). Anyway, these two way can have make some difference?
4. And, I'm sorry :slap:, I was talking about the layout I linked early: http://effectslayouts.blogspot.it/2017/ ... -mini.html You can see the 500k pot, how I asked, can be that the cause of the extra boosting detected? I'm not sure, I can't get it. :hmmm:

Did you build your layout?

Jan1966 wrote:Build it or breadboard it. Then verify it yourself. Not many components if you are worried about the cost.

Thank you, Jan1966. Honestly, the pedal wouldn't be for me, but for a friend of mine, and though I know the cost are not high at all, I'll never make to pay my friend, and at the same time I don't know if want to spend for me, right now. I have a cheap breadboard, but even cheapers jumpers, and I'm not very confortable with it. But, maybe I could use it heavily this time and see what happen.


i don´t make it yet soom as posible.
3.the diode in the original schem is in series ,just for info
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