Philco 604 Bias Cell

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Philco 604 Bias Cell

462ron
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Posts: 755
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Joined: Feb 2013
City: Shenandoah, State, Province, Country: Pennsylvania

#9

03-29-2018, 09:12 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 8BX5. RCA T64
Philco 41-250. Philco49-500
GE 201. Philco 39-25
Motorola 61X13. Philco 46-42 Crosley 52TQ
Philco 37-116. Philco 70
AK 35 Philco 46-350
Philco 620B. Zenith Transoceanic B-600
Philco 60B. Majestic 50
Philco 52-944. AK 84

(This post was last modified: 03-29-2018, 09:14 AM by 462ron.)

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Messages In This Thread

Philco 604 Bias Cell - by mboessen - 03-28-2018, 02:37 PM

RE: Philco 604 Bias Cell - by morzh - 03-28-2018, 04:02 PM

RE: Philco 604 Bias Cell - by mboessen - 03-28-2018, 07:28 PM

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

RE: Philco 604 Bias Cell - by Arran - 03-29-2018, 04:12 AM

RE: Philco 604 Bias Cell - by David - 03-29-2018, 07:24 AM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 07:44 AM

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

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 09:12 AM

RE: Philco 604 Bias Cell - by morzh - 03-29-2018, 09:47 AM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 09:57 AM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 10:00 AM

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 12:34 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 02:06 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 08:31 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 08:39 PM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 09:14 PM

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 09:30 PM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 10:04 PM

RE: Philco 604 Bias Cell - by mboessen - 03-30-2018, 07:49 AM

RE: Philco 604 Bias Cell - by 462ron - 03-30-2018, 09:07 AM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-30-2018, 11:22 AM

RE: Philco 604 Bias Cell - by mboessen - 03-30-2018, 06:41 PM

RE: Philco 604 Bias Cell - by Arran - 03-31-2018, 01:20 AM

RE: Philco 604 Bias Cell - by mboessen - 03-31-2018, 09:32 AM

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