Last evening, as we were parting from the relatives after Thanksgiving dinner, my nephew asked if I could repair his son's guitar amplifier -- the youngster has a Gibson which looks like Tiny Tim's ukelele -- the amplifier has a jack for a 9V wall wart so will probably have to put in a buck converter as most of the Class D amps are 2.5 to 5.4V with built in voltage boosters.
I would prefer not to have to use BGA or micro-SMD but SOIC is fine.
how many mV does an electric guitar pickup put out anyway?
I would prefer not to have to use BGA or micro-SMD but SOIC is fine.
how many mV does an electric guitar pickup put out anyway?
I know it isn"t Class D ,But if you only need 2w and want battery power you might consider useing the LM386 IC.... I believe they can put out 1 or 2 w and can be Paralelled and Bridged for more output power and they are easy to use and sound pretty good in guitar amps....and you can probably find some in 8 pin DIP...
http://cache.national.com/ds/LM/LM386.pdf
http://cache.national.com/ds/LM/LM386.pdf
-->jackinnj, do as Minion say (LM386 works in class B, it is not class D but will do the work 
).
There is neat little guitar amp called "Little Gem mkII" - 9VDC power supply, two LM386 (in BTL).
Use LM386N-3 or LM386N-4, then You can squeeze 2W from it
http://www.runoffgroove.com/lgmk2-pcb.pdf
http://www.runoffgroove.com/littlegemMK2.png
).There is neat little guitar amp called "Little Gem mkII" - 9VDC power supply, two LM386 (in BTL).
Use LM386N-3 or LM386N-4, then You can squeeze 2W from it
http://www.runoffgroove.com/lgmk2-pcb.pdf
http://www.runoffgroove.com/littlegemMK2.png
You can try the ¨Little Rebel¨ too, it sounds very good and the name is cool.
http://rebel.massberg.org/index.php
http://rebel.massberg.org/index.php
Well, finally I did use the TPA2010D -- turns out that the KEC output amplifier was the only thing broken -- this is like the LM386 in a 9-pin SIP...fixed gain of, I guess, 50dB. I was able to mount a little PCB on some Molex headers to use the correct pins.
The KIA6123S which I replaced was good for 450mW -- the TPA2010 will do 2 watts!
I am still waiting for some surface mount ferrite beads. In the interim I am using a pair of ungainly 30uH coils wound on dowels.
The KIA6123S which I replaced was good for 450mW -- the TPA2010 will do 2 watts!
I am still waiting for some surface mount ferrite beads. In the interim I am using a pair of ungainly 30uH coils wound on dowels.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.