collapse

Author Topic: Old newbee  (Read 1433 times)

cbg Rick

  • Regular
  • **
  • Posts: 21
  • Chip Points: 1
    • View Profile
Old newbee
« on: April 29, 2015, 07:44:01 PM »
Hello everyone,
Getting back into guitars and amps after 30 years. I discovered Cigar Box Guitars about a year ago and this new hobby has renewed my interest in guitars and electronics. I've been collecting components and information for a while now and and getting ready to build my own amp. I still remember some of the electronics theory I learned in college 30 years ago and am trying to relearn some of what I've forgotten.
I've built a couple lm386 based amps and I am happy with them, now I'm ready to bump it up a notch. I found a 1967 issue of Popular Electronics with plans for a 22 watt amp and would like to work up to building it.
The pic is of one of my later builds along with my amp.

Enzo

  • Legendary
  • ******
  • Posts: 1860
  • Chip Points: 193
    • View Profile
Re: Old newbee
« Reply #1 on: April 29, 2015, 10:21:21 PM »
Well cool, some of those old Poptronics projects weren't bad.  What issue or issues that year were the amp you want to build?  We can look at back issues in the Popular Electronics archive, or you could post the schematic here directly.

The project article is almost 50 years old, and the industry has changed.  The basic circuit probably works OK, but we may notice a thing or two it needs.  MY major concern is parts that were common then may not be now.  I would bet my lunch money there are some transistors types that would fit right in there, but work better in the amp.  Also, you may find old values like 25uf caps which today would be less common than 22uf caps, and the difference wouldn't matter, except the newer parts are a lot easier to find.

cbg Rick

  • Regular
  • **
  • Posts: 21
  • Chip Points: 1
    • View Profile
Re: Old newbee
« Reply #2 on: April 30, 2015, 12:08:03 AM »
Thanks for the interest Enzo,
It's a simple amp with 5 transistors. I built it on a breadboard and it sort of worked (lots of distortion). I'm going to use this build as a learning  project.
I'll start a new thread with more details and plenty of questions.

Roly

  • Legendary
  • ******
  • Posts: 2184
  • Chip Points: 288
    • View Profile
    • Australian Valve Amps
Re: Old newbee
« Reply #3 on: April 30, 2015, 06:57:05 AM »
Hi cbg Rick, welcome back to the fold.


Oh I do like these scratch instruments and amps, creativity in action.

As Enzo says, post the circuit, or link to, and we'll drag it right up to the current minute.   :dbtu:
If you say theory and practice don't agree you haven't applied enough theory.

 

* User Controls

 
 
Welcome, Guest. Please login or register.
Did you miss your activation email?

* Recent Posts

Info on Sunn Stinger 100 amp by Diablo_IV
[Today at 12:38:27 PM]


Ibanez TSA30 - buzzing by phatt
[November 12, 2019, 08:52:26 AM]


Intermittent loud crackle from Fender Deluxe 112 Plus by traxcontrols
[November 09, 2019, 01:23:37 PM]


So you need a preamp - here are your options by flester
[November 07, 2019, 05:03:55 PM]


Burned up cap by Den.
[November 07, 2019, 03:43:24 PM]

* Sponsors