Inside the Siglent SPD3303X Precision Programmable DC Lab Power Supply.
http://amzn.to/1m9Knp2
UPDATE: There is an even cheaper version, the SPD3303X-E which has 10mV/10mA resolution.
http://amzn.to/1jNsQRL
Atten PSU teardown:
https://www.youtube.com/watch?v=Ju9Q05y_3V0
Rigol DP832 teardown:
https://www.youtube.com/watch?v=s4rV20ulsm0
Forum: http://www.eevblog.com/forum/blog/eevblog-828-siglent-spd3303x-precision-lab-psu-teardown/
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