fig
Village Idiot
...or somewhere thereabouts. Welcome!
100-MMB5457 Channel JFETs. Great little kajiggers for lots of pedal circuits, but their real magic is discovered when matching a spec known as Vgs-off. This value is the absolute lowest voltage between the gate pin and the source pin the DUT will remain ON. There is some really groovy
info on FETs right here on the forum posted by our resident Circuit Wizard
@Chuck D. Bones (dig that new look). It isn't necessary to read the article in order to play the game, but if you are curious, have a look!
forum.pedalpcb.com
These were a bit different to measure, and I used a Peak SOT-23 [<- that's the component package size] test socket and a bit of patience. It's all in full-color over on the Fig's Bench thread.....you know, another self-glorification-gratification blog of mundane musings. Hey, at least it's contained!
These are matched within (careful fig, you mistyped this the last time) .01V
So, with my quad-matched sets made and counted, it's up to someone else to Guess How Many? Maybe you!
What happens if I do guess fig? Well, if you guess correctly you'll win a matched quad set AND a $100 PedalPCB gift code. If you prefer the soldered to a through-hole adapter, I can do that for you.
Fig, can the same number be guessed by more than one person?....PedalHead33 stole my favorite number! Absolutely! Each correct guess wins!
So when does my guess have to be posted? Umm, heck I dunno...how about 11:59 ET Mar 15? Good? Okay.
What if nobody guesses correctly? The closest guess(es) will win! Someone always wins, that's just how it works with these things.
So let's have some fun with FETs......
100-MMB5457 Channel JFETs. Great little kajiggers for lots of pedal circuits, but their real magic is discovered when matching a spec known as Vgs-off. This value is the absolute lowest voltage between the gate pin and the source pin the DUT will remain ON. There is some really groovy
info on FETs right here on the forum posted by our resident Circuit Wizard
@Chuck D. Bones (dig that new look). It isn't necessary to read the article in order to play the game, but if you are curious, have a look!What's All This Matching Stuff About? - part 1
People talk about matching transistors, but what do they mean? There are a few instances in pedal circuits where matching transistor parameters to each other or to circuit requirements is essential for proper performance. 1. FET-based Phase-Shifters Many Phase Shifters used JFETs as...
forum.pedalpcb.com
These were a bit different to measure, and I used a Peak SOT-23 [<- that's the component package size] test socket and a bit of patience. It's all in full-color over on the Fig's Bench thread.....you know, another self-glorification-gratification blog of mundane musings. Hey, at least it's contained!
These are matched within (careful fig, you mistyped this the last time) .01V
So, with my quad-matched sets made and counted, it's up to someone else to Guess How Many? Maybe you!
What happens if I do guess fig? Well, if you guess correctly you'll win a matched quad set AND a $100 PedalPCB gift code. If you prefer the soldered to a through-hole adapter, I can do that for you.
Fig, can the same number be guessed by more than one person?....PedalHead33 stole my favorite number! Absolutely! Each correct guess wins!
So when does my guess have to be posted? Umm, heck I dunno...how about 11:59 ET Mar 15? Good? Okay.
What if nobody guesses correctly? The closest guess(es) will win! Someone always wins, that's just how it works with these things.
So let's have some fun with FETs......
