Pictures!

frequencycentral · May 25, 2009, 07:48:57 AM

Very nice build Thomeeque, and such a neat jobe to squeeze it all in that size box too!

darron · May 25, 2009, 08:24:43 AM

my first psu design. VERY happy with it (:

3 rca outputs give 12VAC, filtered DC and variable regulated DC. the LED is a nice 7 colour that rotates. underside shows a bit of flux i need to clean up. next job will be to laser cut a case for it from acrylic. i'm thinking smoky black....

Thomeeque · May 25, 2009, 08:32:34 AM

Quote from: frequencycentral on May 25, 2009, 07:48:57 AM
Very nice build Thomeeque, and such a neat jobe to squeeze it all in that size box too!

Thanks, Rick!

It should have been only three pots and one PCB build originally (which would fit there at ease), but the need for some buffers rose lately and I have decided to try few additional features in that case as well and then I have just crossed my fingers, that it will still fit there somehow

Btw. I had to add one shield inside (not on pictures) to get rid of LFO ticks inducted into in/out jacks, now it seems to be OK.

azrael · May 25, 2009, 11:56:10 AM

Quote from: Thomeeque on May 25, 2009, 07:42:51 AM
Hi!

It's my "EM1022" (Electric Mistress clone, TDA1022 based)

piccy

Click for more..

T.

Wow! Very nice. I have to say, I'm very intrigued by your build. It's very different from the normal Electric Mistress.

I notice you linked to tonepad...but they only have a schematic up.
Did you design and etch the PCB yourself?

Could you go into more detail about it? What does each of those switches change in the circuit?

niopren · May 25, 2009, 01:12:25 PM

Fuzz factory, BSIABII mod, Fender Blender, Hot Harmonics Mod, EA trem mod.

AnalogPackrat · May 25, 2009, 01:42:14 PM

Here's my humble offering. It's a slightly modified ROG Omega Boost in a small sloped front enclosure that's been in my junk box for 15-20 years. This is also my first try at DragonFly's acrylic swirl painting method. Not great, but not bad. 3mm LED is epoxied into a 1/8" hole.

Mods:
-Reduced output cap to 1uF (film). This still gave me decent levels down to 50Hz and usable bass to 40Hz.
-Added "Grit" switch to select three different bias points. 0 is 4.5V, 1 is about 5.5V, and 2 is about 6.5V.

One problem I have is that changing the master control puts a DC offset on the output. That was my motivation for reducing the output cap. If you turn it slowly it never builds up anything significant, but if you quickly turn it a few volts of offset appears on the offset and takes a few seconds to settle out (dang that 1M resistor). Otherwise this is a nice pedal--adds a certain sheen even with the range all the way up. Me like.

I built it on plain perf board (no copper)--also a first for me. Guts are a bit sloppy. I fashioned a bracket for the PCB using galvanized sheet metal so I wouldn't have to drill another hole in the chassis. That's a piece of blue fish paper to insulate the bottom of the board from the switch contacts.

A P

Br4d13y · May 25, 2009, 01:47:17 PM

did you make that enclosure yourself?? and the mounting bracket for the board is awesome

AnalogPackrat · May 25, 2009, 01:58:22 PM

I didn't make the enclosure. It may have been an LMB or BUD box. The top piece was tan and the side/bottom was brown. I have another old build in a slightly larger version of the same box. I built it in ~1990, so I suspect I bought both boxes around the same time.

azrael · May 25, 2009, 02:10:21 PM

I love that enclosure! I always wanted to build a pedal in something weird, but I haven't found anything cool yet.

flo · May 25, 2009, 02:13:59 PM

@Thomeeque: What a nice and quite complicated build with the dual PCB "folded" into the small enclosure! Very cool!

Nitefly182 · May 25, 2009, 02:42:10 PM

Twin Channel 386 drive

azrael · May 25, 2009, 02:48:17 PM

^Neat design on top? What's going on there?

andrew_k · May 25, 2009, 08:31:55 PM

Quote from: darron on May 25, 2009, 08:24:43 AM
my first psu design. VERY happy with it (:

3 rca outputs give 12VAC, filtered DC and variable regulated DC. the LED is a nice 7 colour that rotates. underside shows a bit of flux i need to clean up. next job will be to laser cut a case for it from acrylic. i'm thinking smoky black....

Nice one! Is this for a bench supply or a product? How much current is available?

richon · May 26, 2009, 01:02:35 AM

Cardboard Tube Samurai · May 26, 2009, 02:47:53 AM

Quote from: andrew_k on May 25, 2009, 08:31:55 PM
Quote from: darron on May 25, 2009, 08:24:43 AM
my first psu design. VERY happy with it (:

3 rca outputs give 12VAC, filtered DC and variable regulated DC. the LED is a nice 7 colour that rotates. underside shows a bit of flux i need to clean up. next job will be to laser cut a case for it from acrylic. i'm thinking smoky black....

Nice one! Is this for a bench supply or a product? How much current is available?

Judging by the panel meter and lack of a shunt, I'd suggest 1 amp

Auke Haarsma · May 26, 2009, 03:54:07 AM

Quote from: azrael on May 25, 2009, 11:56:10 AM
Quote from: Thomeeque on May 25, 2009, 07:42:51 AM
Hi!

It's my "EM1022" (Electric Mistress clone, TDA1022 based)

piccy

Click for more..

T.
Wow! Very nice. I have to say, I'm very intrigued by your build. It's very different from the normal Electric Mistress.

I notice you linked to tonepad...but they only have a schematic up.
Did you design and etch the PCB yourself?

Could you go into more detail about it? What does each of those switches change in the circuit?

I second that!

Nice pics on your site!

darron · May 26, 2009, 04:41:48 AM

Quote from: Cardboard Tube Samurai on May 26, 2009, 02:47:53 AM
Quote from: andrew_k on May 25, 2009, 08:31:55 PM
Quote from: darron on May 25, 2009, 08:24:43 AM
my first psu design. VERY happy with it (:

3 rca outputs give 12VAC, filtered DC and variable regulated DC. the LED is a nice 7 colour that rotates. underside shows a bit of flux i need to clean up. next job will be to laser cut a case for it from acrylic. i'm thinking smoky black....

Nice one! Is this for a bench supply or a product? How much current is available?

Judging by the panel meter and lack of a shunt, I'd suggest 1 amp

it's going to be stricktly bench supply. current draw on the lm317T should be about 1.5A if i put a heat sink on it. today i turned the hookup terminals around since i'll have more room than i thought and took out the 0.058 ohm shunt resistor which i'll make switchable between 100mA to 1A since i don't expect to go past 1A on it. interesting question (:

jakehop · May 26, 2009, 05:51:23 AM

Hi Darron,

Great job. However, make sure to heatsink the regulator if you plan on pushing more than 500mA out that way.

Kind regards, Jake

Thomeeque · May 26, 2009, 08:32:06 AM

Quote from: frequencycentral on May 25, 2009, 07:48:57 AM
Very nice build Thomeeque, and such a neat jobe to squeeze it all in that size box too!

Quote from: flo on May 25, 2009, 02:13:59 PM
@Thomeeque: What a nice and quite complicated build with the dual PCB "folded" into the small enclosure! Very cool!

Quote from: azrael on May 25, 2009, 11:56:10 AM
Quote from: Thomeeque on May 25, 2009, 07:42:51 AM
Hi!

It's my "EM1022" (Electric Mistress clone, TDA1022 based)

piccy

Click for more..

T.
Wow! Very nice. I have to say, I'm very intrigued by your build. It's very different from the normal Electric Mistress.

I notice you linked to tonepad...but they only have a schematic up.
Did you design and etch the PCB yourself?

Could you go into more detail about it? What does each of those switches change in the circuit?

Quote from: Auke Haarsma on May 26, 2009, 03:54:07 AM
I second that!

Nice pics on your site!

Thanks guys again for those kind words and for your interest - check this thread for more info about the build

Cheers, T.

ocg · May 26, 2009, 09:33:05 AM

Quote from: richon on May 26, 2009, 01:02:35 AM

bbpreamp?

News:

Pictures!

jakehop