Search found 21 matches

by b1gtuna
Thu Dec 03, 2015 12:59 am
Forum: Pro Audio Design
Topic: Laying out a PCB
Replies: 6
Views: 17175

Re: Laying out a PCB

The PCB is still on the way. Should arrive this week. In the meanwhile, I got myself some expensive capacitors from Digikey.
I am not sure if there is a point in using Nichicon's Muse caps for dc-blocking and by-passing, but oh well...
by b1gtuna
Thu Dec 03, 2015 12:57 am
Forum: Pro Audio Design
Topic: Laying out a PCB
Replies: 6
Views: 17175

Re: Laying out a PCB

I use Pad2Pad. It's easy to use and they treat me well. I do not use electrolytic capacitors for IC power supply bypass. Put two large electrolytics where the power connects to the board, and then use MLCC's at each power supply pin on each IC, as close to the pin as possible. 0.1uF MLCC is plenty ...
by b1gtuna
Sun Sep 27, 2015 11:06 pm
Forum: Pro Audio Design
Topic: Simple Audio Splitter with NE5534
Replies: 22
Views: 40327

Re: Simple Audio Splitter with NE5534

Thanks JR for answering my question. I guess I wanted to find out if a power supply that can provide 80mA maximum current is enough for my amplifier design. I am looking at a 5v to +/-12v boost converter: http://www.ti.com/tool/lownoisesplitrailnoniso-boost-ref . It looks like this might do the job!...
by b1gtuna
Sun Sep 27, 2015 1:14 pm
Forum: Pro Audio Design
Topic: Simple Audio Splitter with NE5534
Replies: 22
Views: 40327

Re: Simple Audio Splitter with NE5534

Hello everyone, I am back with another question. I appreciate all your guidance! The short-circuit maximum current of NE5534 is 38mA (as per the datasheet). Can I assume that I can power 2 X NE5534 with an 80mA boost circuit? I have tried calculating the power requirement. So far I got only this far...
by b1gtuna
Tue Sep 22, 2015 11:00 pm
Forum: Pro Audio Design
Topic: Laying out a PCB
Replies: 6
Views: 17175

Laying out a PCB

Thanks to this forum, I was able to draw up a schematic[1] for 3 way audio splitter using NE5534. Following Wayne's suggestion, I have been trying to manually lay the board out. And surprise surprise it has been pretty difficult. Some rules I thought I would stick to: - One layer board. Apparently a...
by b1gtuna
Tue Sep 01, 2015 11:04 am
Forum: Document
Topic: My first flanger (delay line) kit.
Replies: 6
Views: 7971

Re: My first flanger (delay line) kit.

Thanks for sharing.
The circuit looks doable as a side project.
Gonna put this on my to-do list!
by b1gtuna
Tue Sep 01, 2015 11:00 am
Forum: Pro Audio Design
Topic: Single supply op-amp recommended for general audio applicat?
Replies: 2
Views: 11510

Single supply op-amp recommended for general audio applicat?

Hello everyone. I have been using the NE3354 which has +-12volt supply rails (dual supply).

Now my goal is actually not to drive big speakers. So I think i don't need massive peak voltages.

Can you guys please recommend a single supply op-amp with low supply voltage (=<5v).

Thanks!
by b1gtuna
Wed Aug 19, 2015 12:15 am
Forum: Build
Topic: Simple pcb design program
Replies: 28
Views: 39227

Re: Simple pcb design program

mediatechnology wrote:Is there a complexity or size limit of the free version?
As far as I'm concerned, no there is no limit. The only limit is that all your projects are `public`.
by b1gtuna
Mon Aug 17, 2015 11:48 pm
Forum: Build
Topic: Simple pcb design program
Replies: 28
Views: 39227

Re: Simple pcb design program

I have been getting to know Altium's Circuit Maker - http://www.circuitmaker.com It is 100% free, geared toward makers and hobbyists. Its component library is directly linked to ciiva (https://ciiva.com). So you can search parts with very specific descriptions. I think the tool is easy enough to lea...
by b1gtuna
Mon Aug 17, 2015 11:24 pm
Forum: Document
Topic: TI "Analog Engineer’s Pocket Reference"
Replies: 2
Views: 5857

Re: TI "Analog Engineer’s Pocket Reference"

Thanks for the link. Surprisingly I have an account with Ti. Briefly skimmed the doc. Lots of graphics. Beneficial for people like me who are familiar with, but still get confused with diode polarities. It also has a dedicated section for basic op-amp configurations, with explanations for bandwidth ...