Tweet
Re: Silver Sabre circuit
Hi Dave,
I’m not disagreeing with you, but the “improvements” I suggested are based on my own tried and proved mods.
The modulator makes quite noticeable improvements to the stability, as does using the N type amps.
My own unit has had the time constants of the self nulling blocks altered which gives a small, but never the less noticeable increase in response to SMALL objects, but at the somewhat annoying tendency to “smear” on large targets or “overload” conditions.
I use an increase of about 2.5 times as a gain factor over what Tesoro use on the front end.
Once you get used to the foibles of the modifications you have made, then the machine “seems” to be much better. What I suggested was meant as a starting point, NOT the definitive guide to re-designing the SS.
As to the xtal oscillator, I have examined over 50 Tesoro’s and found them to work anywhere between 8.8KHz and 10.5KHz. I for one do not believe that operating in the centre of this band at say 9.3KHz using a crystal derived Tx signal can do any harm.
Yes the SS is NOT the most sensitive of units, but IS a VERY simple circuit with good discriminate which the beginner can experiment on and learn the basics of motion beepers.
What I posted was not intended to be the definitive guide to re-designing the SS but was merely a suggestions of what people could “play” with as regards certain areas of the circuit to see what they might like to change for PERSONAL PREFERENCE.
In short, IF YOU HAVE a Silver Sabre Plus, and ARE HAPPY with it, DO NOT “PLAY” WITH THE CIRCUITRY. If you want to learn about motion machines, then PLAY AWAY!
I accept NO responsibility if you blow a perfectly good working machine up by implementing any of my suggestions. But asfar as a "new build" is concerned, then it's up to you.
Hi Dave,
I’m not disagreeing with you, but the “improvements” I suggested are based on my own tried and proved mods.
The modulator makes quite noticeable improvements to the stability, as does using the N type amps.
My own unit has had the time constants of the self nulling blocks altered which gives a small, but never the less noticeable increase in response to SMALL objects, but at the somewhat annoying tendency to “smear” on large targets or “overload” conditions.
I use an increase of about 2.5 times as a gain factor over what Tesoro use on the front end.
Once you get used to the foibles of the modifications you have made, then the machine “seems” to be much better. What I suggested was meant as a starting point, NOT the definitive guide to re-designing the SS.
As to the xtal oscillator, I have examined over 50 Tesoro’s and found them to work anywhere between 8.8KHz and 10.5KHz. I for one do not believe that operating in the centre of this band at say 9.3KHz using a crystal derived Tx signal can do any harm.
Yes the SS is NOT the most sensitive of units, but IS a VERY simple circuit with good discriminate which the beginner can experiment on and learn the basics of motion beepers.
What I posted was not intended to be the definitive guide to re-designing the SS but was merely a suggestions of what people could “play” with as regards certain areas of the circuit to see what they might like to change for PERSONAL PREFERENCE.
In short, IF YOU HAVE a Silver Sabre Plus, and ARE HAPPY with it, DO NOT “PLAY” WITH THE CIRCUITRY. If you want to learn about motion machines, then PLAY AWAY!
I accept NO responsibility if you blow a perfectly good working machine up by implementing any of my suggestions. But asfar as a "new build" is concerned, then it's up to you.
Comment