2010年1月10日 · CCS plate load on the input tube DC coupled to a CCS loaded parallel fed output stage with unbypassed cathode resistor, transformer primary return to the actual cathode.

2020年7月12日 · I decided to load the D3a plate with CCS instead of resistor. I'm using a 10M45S chip as my CCS set at 15mv (~180 ohm resistor in series with k pin) and anode voltage of 155 V.

2016年2月26日 · The D3A triode connected and CCS loaded has an amplification factor of 77 and can be used with 150 Volts over the tube at 20mA. Lowering the cathode resistor to 6KΩ …

2010年1月10日 · While using a 6SL7 there (paralleled sections) for reasons of availability, with the CCS set to 10mA and the cathode resistor adjusted you can just drop the D3a in:

2020年10月30日 · At a high level, it is a balanced input MC phono with Lundahl LL9226XL MC step-up transformers, CCS loaded LED biased triode-strapped D3a first gain stage, all-in-one …

2020年10月14日 · The phono was designed around a triode-strapped D3a as the input tube with triode strapped EF86 as the second gain stage. Both tubes are CCS loaded and LED biased.

I tried resistive load too, just swapped CCS with 27k/5W resistor – circuit "pulls" about 10mA, and I measured A=66 times with D3a and A=45 times with E180F. Sound is a little softer and …

2011年2月5日 · Using the CCS to feed the VR Tube ensures that during start up, the in-rush current is limited, and provides a stable operating point for the VR. a further refinement would …

2008年2月29日 · But, I would expect it to be similar to a CCS in terms of performance. As I understand it, basically, a gyrator allows you to set plate voltage while the tube finds its own …

2009年3月20日 · The main CCS is made from two depletion mode mosfets. This CCS can be used as a plate load, or as a supply for the Screen grid acting in concert with the Zener diodes …