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Reverse engineer with Photoshop
Written by SQKYbeaver   
Friday, 25 February 2011 00:00

Authors: SQKYbeaver

RicciBitti has a simple how-to reverse engineer using photoshop, or your favorite open source photo editor. This could be useful for double checking you own PCBs.

Read more: http://dangerousprototypes.com/2011/01/21/reverse-engeneer-with-photoshop/

Last Updated on Friday, 25 February 2011 00:12
 
FM Broadcasting Stereo Encoder
Written by Administrator   
Monday, 14 February 2011 00:00


This stereo encoder is a halfway between analogue and digital processing. It combines the best from both domains to provide high-quality and easy to build device. The sampling frequency used in this stereo encoder is 97 times higher than the pilot tone frequency. This makes very easy to reject all spectral residues around the sampling frequency without affecting the main signal characteristics. 

FM Broadcasting Stereo Encoder –[via]

Last Updated on Monday, 14 February 2011 01:19
 
Cmoy DIY Headphone Amplifier
Written by admin   
Thursday, 03 February 2011 00:00

Authors: admin


This is a DIY Headphone amplifier based on OPA2134 op-amp by Texas Instruments.

Apart from running headphones crystal clear, another advantage is that it can act as gain enhancer for my gainclone when watching movies from PC.

Cmoy DIY Headphone Amplifier - [Link]

Last Updated on Thursday, 03 February 2011 01:47
 
Small AM Transmitter
Written by admin   
Wednesday, 02 February 2011 00:00

Authors: admin


electronics-diy.com writes:

So, I needed a small transmitter, which would allow me to transmit good, old music into my AM-only radios. So, one saturday afternoon I got into gear, designed and built a very crude, terribly non-optimized little transmitter. It’s almost a joke expressed in electronics, full of poor design, so please don’t think that this is the best I can do! You must see it as a quick and dirty 5-hour effort, because that’s all the time the transmitter took to design, build, and test

Small AM Transmitter –[Link]

image

Last Updated on Wednesday, 02 February 2011 02:18
 
Test stereo FM transmitter with RDS
Written by admin   
Friday, 21 January 2011 00:00

Authors: admin

This project is a stereo FM transmitter with RDS. The transmitter frequency is controlled by a Philips TSA5511 PLL IC through I2C communication. For the RDS part the author used a programmed RDS IC’s, the MRDS192.

Test stereo FM transmitter with RDS - [Link]

image
image

Last Updated on Friday, 21 January 2011 02:59
 
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