1590B enclosure is no good for me. Any alternatives? I would like to make compact pedals using PCB mounted devices to avoid cables. In/Out standard mounting is left and right, but that's no good because first, it takes a lot of space and second, when both jacks are fixed to PCB, you cannot insert pr...

These are the schematics of the JFET 3.3V version I came up with:

Spice simulations of a version of Dirty Little Secret with MOSFETs instead of JFETs and at 3.3V Dirty Little Secret MOSFET 3.3V version: LTSpice analysis . Schematics: https://2.bp.blogspot.com/-X2lKRXrVbDA/V-g74zXSNLI/AAAAAAAAMPU/YnC5cDYOTAg1oop65bvcXc93M4P2bG8ngCLcB/s1600/mosDLSgainsch.png I think...

I know. That's what the wink is for. Some jfet's won't work because Vgs will be close to 3.3V, and for the dirty little secret, the top Jfet's source will be at ~ (0.5*3.3V)+Vgs. As you can see, Vgs actually must be lower than1.15V. That's why I offered you some very low Vgs jfets. Ah OK, sorry I g...

bmxguitarsbmx wrote:Yeah! They work great at 33V

I have quite a few j201's that I have sorted out with Vgs <=0.18V . PM me your address, I'll send you a care package. Then you can tell us

They should work up to 40V, but I meant 3.3V not 33V. I am a low voltage guy.

Can a JFET based overdrive circuit be powered at 3.3V? I took the Catalinbread Dirty Little Secret overdrive pedal that emulates a Marshall super-lead / super bass amp and tried to see if I could clone it using 3.3V instead of 9V. I have to say that it's a bit of a challenge, JFETs in general don't ...

thanks to dr nomis and rozzonics for the graphs and explanations and whatnots. an interesting read. rezzonics, am definitely looking forward to hearing your schottky shin-ei. don't keep us in suspense. dr nomis, you posted this diagram of the jcm diode configuration you used to produce those oscill...

I've been working on this AC30 Tube Simulator project for some time, and published the results on my blog. I obtained values by comparing LTSpice simulations of the original AC30 valve circuits and the Stephan Möller circuit. I started by giving credit to his excellent work. These are the LTSpice si...

How about note decay? I've always had some kind of crackly/sputtery decay when using LEDs as clippers. Silicon/Mosfets/Ge were always smoother. Sharper I-V response? LEDs clip at higher voltage, 1.2V or more, that means that low level signals don't suffer distortion and I would say that the I-V res...

Germanium diodes start clipping at lower voltages 300mV, compared to 600mV of silicon diodes and 1.2V of LEDs, that means that for germanium diodes, clipping starts at lower levels and hence distortion happens in a wider dynamic range. Germanium diode clipping has a more rounded I-V response than si...