Super-Freq

Author: admin

  • Ugly Face for Steve

    Here’s an Ugly Face I built. I used PnP for the design on top. The transfer was a imperfect. But mostly worked. I’d really like to find a reliable toner transfer that works on these metal boxes.

  • Some PCBs

    Here’s the current projects. Two Echo Base and two Casualty 4 Phaser shifters.

  • Old School Layouts

    I found these old school layouts by Andy. These look like fun to build the layouts just scream mojo. I think I will have to etch a few of these up and build them with carbon comp resistors and ceramic caps! Andy aka “Dragonfly” posted like mad on the DIYStompbox forum for several years and…

  • Art of the Stompbox

    Looks like one of my Ugly Face’s made it into the “Art of the Stompbox” exhibit at the Museum of Making Music in San Diego. http://www.flickr.com/photos/museumofmakingmusic/page3/ http://www.museumofmakingmusic.org/index.php?option=com_content&task=view&id=282&Itemid=41

  • Electronics Demonstrations

    Wow, you must take a look at this site. These are the most amazing applets. http://www.falstad.com/circuit/e-index.html

  • Sycophant

    Here’s my take on the SHO. With crackle free knob. Adjust the value of C3 to create a range boost.

  • LM386 Gain

    I’ve playing around with the 386 Audio Amplifier. This is a really great chip. It has a lot of possibilities. Looking at all of the great circuits that use this I’ve noticed there are many different ways to set the gain. Gain is set using pins 1 and 8. With these two pins open the…

  • DIY Electronics Swap Meet 2010

    Bay Area DIYer’s should make it to the DIY Swap meet on Feb 21 at 924 Gilman St in Berkley CA. For more info: http://www.euthymia.org/ The first three were a great time lot’s people with lot’s of stuff. Anyone from the should meet up with me. I’ll try and wear my DIY Stompboxes t-shirt.

  • Stompbox PodCast

    I had fun last week recording a Podcast with my pal Joe who put together some great series of sound clips highlighting various boosters. [audio:http://super-freq.com/wp-content/uploads/2010/01/01_Podcast.mp3] Download

  • Stompbox Math and Calculators

    Here’s a great thread. I’ll need to read it a few times before it all sinks in. http://circuitworkshop.com/forum/index.php?topic=71.0

  • MosFET Range boost

    Here’s a simple idea that you will work on almost every transistor circuit out there. We’ll apply it to the MosFET boost here. Remember the gain of the MosFET boost was determined by the Drain and Source resistors. For the example circuit, as the Source resistor decreases in value the gain increases. A capacitor acts…

  • MosFET Gain

    Here’s a typical MosFET boost. The gain is roughly determined by the ratio of Drain and Source resistors. Divide the Drain resistor (Rd) by the Source resistor (Rs) to find the gain. For example if Rd = 5k and Rs = 5k the gain is 1. Use a Pot for Rs to set variable gain.…