Philco 604 Bias Cell

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Philco 604 Bias Cell

462ron
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03-29-2018, 10:12 AM

I will throw this out there as an experiment. What if you were to put a resistor with bypass capacitor in the cathode Of the 75 tube. You would need to experiment with what value of resistor needed to give you +1 volt on the cathode, which would be equivalent to giving you -1 volt on the grid. It would be an easy cure needing to add 2 components to the cathode circuit! This would make it self- biasing!

Ron

Bendix 0626. RCA T64 Philco 20B
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Motorola 61X13. Philco 46-420 Crosley 52TQ
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(This post was last modified: 03-29-2018, 10:14 AM by 462ron.)

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Philco 604 Bias Cell - by mboessen - 03-28-2018, 03:37 PM

RE: Philco 604 Bias Cell - by morzh - 03-28-2018, 05:02 PM

RE: Philco 604 Bias Cell - by mboessen - 03-28-2018, 08:28 PM

RE: Philco 604 Bias Cell - by PhilcoPhan1936 - 03-29-2018, 04:16 AM

RE: Philco 604 Bias Cell - by Arran - 03-29-2018, 05:12 AM

RE: Philco 604 Bias Cell - by David - 03-29-2018, 08:24 AM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 08:44 AM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 09:24 AM

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 10:12 AM

RE: Philco 604 Bias Cell - by morzh - 03-29-2018, 10:47 AM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 10:57 AM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 11:00 AM

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 01:34 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 03:06 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 09:31 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 09:39 PM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 10:14 PM

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 10:30 PM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 11:04 PM

RE: Philco 604 Bias Cell - by mboessen - 03-30-2018, 08:49 AM

RE: Philco 604 Bias Cell - by 462ron - 03-30-2018, 10:07 AM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-30-2018, 12:22 PM

RE: Philco 604 Bias Cell - by mboessen - 03-30-2018, 07:41 PM

RE: Philco 604 Bias Cell - by Arran - 03-31-2018, 02:20 AM

RE: Philco 604 Bias Cell - by mboessen - 03-31-2018, 10:32 AM

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