Does anybody have the SA572 LTSpice model?

I've redrawn the hush schematic in a way that it could be more understandable. I plan to create a clone of it as soon I can route it and make a professional PCB. In the redrawn schematics, it became easier to understand what each part does. As I understood, The LM13600 is responsible for the VCF cir...

I think still worth to clone one using discrete parts. Maybe a exact copy of 3080 will not produced, but a very interesting OTA will.

When I was young I dreamed with custom chip companies, delivering ICs to the people. This time has not come yet! I keep my dreams.

The DSP56364 is the component responsible for a considerable current consumption on this circuit. If the power source is defective, non capable to drive the enough current to the circuit, the lack of DSP56364 can restore the voltage levels to the correct values. So, if the power source is defective,...

Please, can you send a more detailed photo from left side of the board, the right place where FV-1 circuit is placed?

I've made some enhancements to the image in order to be more readable.

I would like to see some non linear response comparison between the two circuits. I will be very surprised if the two circuits present the same signal distortion!

hi all, im just looking for a small simple tube amp schematic, without the pre-amp just amp, cause i want mi guitar signal the clearer and natural possible without any filter on it.... This document is written in a strange language (sorry I write better portuguese than english), but I think all sch...

I know its sounds like an aggravated assault, but, try this:

https://www.ebay.com/itm/MC14007UBCPG-4 ... 2c73913a5b

I took much time to make mine work again. I have tested all ICs and all of them were ok. After a long and big fight, I realized the problem were on the electrolytic capacitors. Because the pedal was turned off for much time, some electrolytic capacitors went out of specification. In order to "r...

other = kicad

mrkaploca wrote:something similar u mean ?
http://circuitworkshop.com/forum/index.php?topic=1083.0

Yes, but we must to vary the current, not the voltage on control pin!

~arph wrote:But where is the digipot ? I suspect a PWM controlled current sink

Maybe it use a FET (or other device) to control the delay, Although it is difficult to control the FET to get a linear resistance variation, the PIC can monitor the fck output (pin 5) in order to achieve the correct delay!

guts from the first series: http://img1.iwascoding.de/2/2008/02/11/28CF27521F0D47F589717612B466B731.jpg http://img1.iwascoding.de/2/2008/02/11/12333D544F7841AF9F9DB74B3ADED9FA.jpg http://img1.iwascoding.de/2/2008/02/11/0CAE0B79FBB7468C853ACF8114A3DE7A.jpg http://img1.iwascoding.de/2/2008/02/11/D15A...

Valve Head wrote:Here are the schematics for the SV-1. This should get you started.

Thank you very much!

I've got a Marshall Supervibe SV-1 but it is not working. Does anybody has its schematics?

Baja,

great work!

Can't you post the schematics?

Why not use an standard voltage regulator as 7806 in order source tube filaments? We can use the BOX as thermal dissipator. Actually, AC 10v power source isn't what we call a standard value!

The power transformer function on the tube amp circuit is not only to source it. It has the function of isolate the user from the power plug on the wall. Without the power transformer, the user will have always to pay attention how to plug other electronic device to the amp. The polarity inversion w...

I still can't find those JACK. My RV3 i svery scratchy. Can anybody help me?

Try this, but I have not tested. Beware: High voltages inside.