- 1. [Amps] Passive grid: (score: 1)
- Author: 2@vc.net (Rich)
- Date: Thu, 28 Nov 2002 07:00:06 -0800
- correct yes have fun, At least 800 screen V are needed. The simplist and safest screen supply is a zener-string shunt regulator at the lv end of the hv bleeder. 40, 5W, 20v zeners mounted on perfboa
- /archives//html/Amps/2002-11/msg00387.html (7,689 bytes)
- 2. [Amps] Passive grid: (score: 1)
- Author: garyschafer@attbi.com (Gary Schafer)
- Date: Thu, 28 Nov 2002 20:26:24 -0500
- Hi Rich, I have always worried about using a zener string from the HV supply for the screen. What happens if the plate choke or something else should open in the plate circuit? Also if one were to tu
- /archives//html/Amps/2002-11/msg00393.html (7,147 bytes)
- 3. [Amps] Passive grid: (score: 1)
- Author: 2@vc.net (Rich)
- Date: Fri, 29 Nov 2002 16:26:43 -0800
- the screen Yes When the anode/plate V disappears, there is no current through the resistor that delivers current to the screen regulator, so the screen has 0V/0A. cheers, Gary - Rich..., 805.386.373
- /archives//html/Amps/2002-11/msg00407.html (8,170 bytes)
- 4. [Amps] Passive grid: (score: 1)
- Author: garyschafer@attbi.com (Gary Schafer)
- Date: Fri, 29 Nov 2002 20:55:06 -0500
- But there WILL be screen voltage and no plate voltage if a plate choke should open as an example. Could the screen be damaged with full screen voltage and full screen current with no plate voltage? O
- /archives//html/Amps/2002-11/msg00408.html (9,156 bytes)
- 5. [Amps] Passive grid: (score: 1)
- Author: 2@vc.net (Rich)
- Date: Sat, 30 Nov 2002 06:22:02 -0800
- hv with I have never seen one open during a hv+ to gnd arc. The screen can be damaged only if its W-rating is exceed. No HV fuse is needed if the primary of the hv transformer has a circuit breaker.
- /archives//html/Amps/2002-11/msg00411.html (10,126 bytes)
- 6. [Amps] Passive grid: (score: 1)
- Author: garyschafer@attbi.com (Gary Schafer)
- Date: Sat, 30 Nov 2002 15:57:43 -0500
- Thanks Rich, 73 Gary K4FMX
- /archives//html/Amps/2002-11/msg00421.html (6,842 bytes)
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