A few days ago my friend came to the house, he shows the constant current amplifier schematics he found in http://www3.ocn.ne.jp/ ~ tima / products / ccamp / ccamp.html. We discuss and discuss until a few days. My friend kept us curious and eager to assemble.
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| Schematic Constant Current Amplifier Original |
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| Schematic Constant Current Amplifier Modified |
Modified schematic
I've assembled Constant Current Amplifier, but I do not really remember very well, probably from DIY Nelson Pass Zen. Constant Current Amplifier quite different from the single-ended Zen or its variants.
After reading and studying the sources of http://www3.ocn.ne.jp/ ~ tima / products / ccamp / ccamp.html and Hen experiment we finally managed to modify it by adding a few components.
In blind tests, the addition of these components produce a sound more amazing.
RX1 and CX1 form the LF filter. RX1 = 100 ohms and RCX1 = 1 nF. = 11 ohm RX2, RX3 = 0.22 ohm 5 Watt and CX2 = 100 nF
Assemble
Therefore, I use a 2 watt resistor all unless otherwise specified.
For power supply I recommend to use A Simple Capacitance Multiplier Power Supply For Class-A Amplifiers Rod Elliott - ESP. I use a voltage source 21 Volts and 90 Volts.
Assemble survived.
(Hopefully in the next article I will discuss it in more detail)
