Search found 218 matches

by PokeyPete
12 May 2019, 20:02
Forum: Parts Sourcing & Trading
Topic: BC183L
Replies: 6
Views: 2256

Re: BC183L

It's all in the chasing of mojo. I'll admit to doing it. I've had great fun running down the correct components and getting the circuit board just right. But, I've also been mildly disappointed when plugging in and failing to do a convincing rendition of Gilmour, or Hendrix, or etc. The magic wasn't...
by PokeyPete
19 Mar 2018, 13:42
Forum: DIY Stompbox designs
Topic: TA7135 VS TA7136 Boss CE-1
Replies: 3
Views: 1820

Re: TA7135 VS TA7136 Boss CE-1

The schematic that I have seen shows IC1 and IC3 being TA7136P, and IC2 is MN3002

http://www.schematicsunlimited.com/b/bo ... -schematic
by PokeyPete
27 Apr 2017, 18:46
Forum: Pedal Debugging & Troubleshooting Support
Topic: Help with a capacitor value for a charge pump
Replies: 3
Views: 142

Re: Help with a capacitor value for a charge pump

Hi guys, im currently. Uilding the deifet deizel sim over at tagboards, and there is a call for a 470uf capacitor. Sadly i onky have a 470uf 16v cap. Now with the charge pump am i going to be ok, as its a 9v input with the 7660s chip makkng a chargepump. I may have to socket and experiment with dif...
by PokeyPete
01 Nov 2015, 23:53
Forum: Stuff Seen for Sale
Topic: Sale IN-18
Replies: 5
Views: 5392

Re: Sale IN-18

Not all nixie tubes go for that kind of money, but the unused 'big' ones do. Those Russian tubes mentioned have been going for around that price for quite a few years now. Smaller tubes have been creeping up in price as they get less plentiful. Russian tubes are about all I see advertised anymore. A...
by PokeyPete
02 Jul 2015, 16:26
Forum: Amplifiers
Topic: Bass tube amp not loud enough
Replies: 38
Views: 12911

Re: Bass tube amp not loud enough

My first thought would be what is the power handling capability of the power transformer? Can it support the added current of the two added power tubes? Can the 6.3V winding support two more filaments? Sometimes transformers are designed to tight tolerances as needed for a particular design. I haven...
by PokeyPete
25 May 2015, 18:22
Forum: Parts Sourcing & Trading
Topic: Looking for a BOSS Vintage Silver Metal Thumbscrew
Replies: 10
Views: 5532

Re: Looking for a BOSS Vintage Silver Metal Thumbscrew

I probably shouldn't respond here because I do not have a legit source. But if a metal 'stainless steel' one would do as a temporary substitute (beats plastic),
check out Small Bear Electronics.
by PokeyPete
25 May 2015, 18:04
Forum: Ready-To-Build Effect Projects
Topic: Stupidly Awesome Buffer [verified]
Replies: 41
Views: 4226

Re: Stupidly Awesome Buffer [verified]

That's almost exactly the circuit I've always used, except I tend to use slightly different bias values to you, I put RF bypassing on the input (I don't like getting the local AM radio Station through my guitar rig), and I mostly use a dual (or quad) op-amp because it's usually part of an effect ra...
by PokeyPete
02 Oct 2014, 20:57
Forum: Diodes & LEDs
Topic: Sub for Bat85 - Schottkey in OCD-type circuit
Replies: 2
Views: 6947

Re: Sub for Bat85 - Schottkey in OCD-type circuit

OK, apologizing in advance....I haven't looked at the circuit or schematic, so I'm going out on a limb with this answer. It appears to me that by suggesting a Schottky diode or the 1N60 germanium diode, they are really saying to pick a diode with a low voltage drop.....typically .2V to .3V. Normal s...
by PokeyPete
02 Oct 2014, 13:17
Forum: Power
Topic: Regulated DC Voltage Current
Replies: 4
Views: 8083

Re: Regulated DC Voltage Current

If I may be so bold.......Do you want answers to random questions? Or, do you have a real life situation for which you are seeking a solution? If it is the later, if you would give us the specifics, perhaps we can offer a solution. I'm just saying that you will receive better answers if we understan...
by PokeyPete
01 Oct 2014, 14:52
Forum: Power
Topic: Regulated DC Voltage Current
Replies: 4
Views: 8083

Re: Regulated DC Voltage Current

The short answer is no.
by PokeyPete
04 Sep 2014, 06:40
Forum: Absolute Beginners
Topic: Schematic notes are confusing me a bit...
Replies: 4
Views: 7618

Re: Schematic notes are confusing me a bit...

That is essentially correct. But please be advised of one more thing. The schematic shows your supply voltage going to three places: 1) The LED indicator 2) The Voltage divider 3) And, as input supply to the voltage regulator But, what is not shown (just implicitly implied) is the +V supply, and gro...
by PokeyPete
03 Sep 2014, 21:19
Forum: Absolute Beginners
Topic: Schematic notes are confusing me a bit...
Replies: 4
Views: 7618

Re: Schematic notes are confusing me a bit...

The 9-18VDC is simply your power source. The circuit is designed for any voltage in that range. Generally speaking, the higher the voltage used, the more "headroom" you will have. The power source can be a 9 volt battery, or two 9 volt batteries in series (18V), or an external power supply. The +V i...
by PokeyPete
28 Aug 2014, 18:29
Forum: Absolute Beginners
Topic: Bluesbreaker clone mods
Replies: 2
Views: 6795

Re: Bluesbreaker clone mods

Not sure why no one replied to you, so I registered to give you an answer. If you want the sweep of the pots to be different, I suggest you get different pots. For the gain, you should have a 100k linear (B100) pot. If you want to only use half of that range, get a 50k linear pot instead. The tone ...
by PokeyPete
08 Jul 2014, 17:34
Forum: Amplifiers
Topic: Fender Showman BF 85w loudspeaker question
Replies: 3
Views: 1784

Re: Fender Showman BF 85w loudspeaker question

OH, man! Suggesting a speaker is tough. Anyone could suggest a speaker that six people will like, and another six will think it sounds like crap. But, I'm feeling a little ballsy, so I'll start the ball rolling: The BF Showman, and the "loud clean tones and very dirty noisy riffs" statement, made me...
by PokeyPete
26 Jun 2014, 21:35
Forum: Power
Topic: Anyone ever used a Weber WPDLXFMR transformer?
Replies: 5
Views: 10765

Re: Anyone ever used a Weber WPDLXFMR transformer?

As I stated elsewhere in a similar topic, I used this for my power supply. However, as I recall the 240V version is a little too large for this box. I mounted the xfmr in the center and had room on each side for 4 circuits. It's not a pretty box, but quite functional. http://www.smallbearelec.com/se...
by PokeyPete
12 Jun 2014, 12:58
Forum: Debugging
Topic: Blown fuse
Replies: 2
Views: 1922

Re: Blown fuse

I believe your assessment is correct. Assuming that your build is correct, I would venture to guess that the cause is the filtering cap. I looked up a schematic and it showed a 100uF capacitor. This capacitor is essentially a dead short upon power up. It charges quickly, but still causes a large mom...
by PokeyPete
15 Apr 2014, 07:39
Forum: Diodes & LEDs
Topic: Clipping Diodes
Replies: 5
Views: 8769

Re: Clipping Diodes

Forgive me for asking a simple question.(I've been knocking back a little bit of Grandpa's Cough Medicine.lol) Symmetrical Clipping is with 2 Diodes.Asymmetrical Clipping is with 3 Diodes.If you use more than 3 Diodes in the Clipping Section(i.e. 2 sets of Diodes in series.) Would that still be Asy...
by PokeyPete
13 Apr 2014, 16:27
Forum: Amplifiers
Topic: FRONTMAN 212R TRANSFORMER QUESTION
Replies: 3
Views: 2986

Re: FRONTMAN 212R TRANSFORMER QUESTION

Hello..i have a question regarding transformer..a frontman fm212 (100w SS )was sent in for repair..(and mods).the owner blow the fuse by powering it using 220v/240v..the amp is rated 110v(US)..i want to change the transformer for 240v..any recommendation for the replacement transformer ampage ? thx...