I wanted to start working with my ESP8266 and needed a 3.3V regulator to get enough current. I had ordered some 1117 regulators, but went looking through what I had laying about, and "created" this simple circuit.

It is not very efficient, and would benefit from a Darlington in place of Q1, but it gets the job done with enough current for the ESP8266. If the output voltage is just a tad to large, try replacing D1 with a Schottky type.

Adding a 10uF capacitor from 5V to ground is a good idea.

I have had this baby sitting on a shelf for a couple of years, getting more and more sick, to the point where it would skip through a CD in about 1 minute, very annoying. I needed something for my DAC to compete against and tried the SONY CDP-228ESD I had around, this uses a SONY digital filter and 2xPCM58P-J, but it was really no match, and I have never liked the sound of the thing. I must say, that I like the construction, this SONY, is surely made to be above average, but for me it didn't do the trick sound wise.

Back to the DCD-3560, I tried the adjustment procedure outlined in the service manual, with no success. So, back to the conclusion, that the laser was dying, fast. The laser is a KSS151A, from SONY, and of course out of production! Costing on the wrong side of 100EUR it wasn't really an option to just buy a new one. Secondly, things are a little more complicated with the KSS151A than a most other lasers I have seen, throwing out a lot of money, only to wreck the player completely, didn't seem like the way to go Until

I realised, that the SONY machine had the same laser, unfortunately, this means, that I've killed it, not in cold blood, but still the SONY is now very dead. After sweating 5 litres of nervous sweat, loosing a screw in the actuator, and readjusting the DCD-3560, which by the way, went smother with the new laser. The tracking gain was impossible to get right, with the old laser. Well the DCD-3560 is running smoothly again. Now there is nothing to do but hope the laser will last a long time.

DENON DCD-3560 service manual

I have been looking for a way to simulate an inverse RIAA network in spice, After using a passive discrete simulation for a while, i found this: How to calculate RIAA correctly?

Using the ELAPLACE part in OrCAD PSpice, changing the XFORM paramter to this


And everything works like a charm.

Generated on 2018-05-03 01:14:21.849064