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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: A series regulator posted by mobiasloop on November 9, 2014 at 16:56:27:
...by attaching a zener diode at the junction of the base of that NPN pass transistor. The zener would be in parallel with the 4700uf-25v E cap. The value of this cap controls turn on time. The zener diode should be .7v less than the desired output voltage and there is no indication of what the desired output filament voltage is. This is a very BRITISH schematic. The filament supply diode bridge is not fully drawn. There is no wiring diagram/schematic (series-parallel??) of the filament wiring. He is applying a DC bias to the filaments and raises them above ground. Moe
"...the fool doth think he is wise but the wise man knows himself to be nothing but a fool." Will Shakespeare
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Follow Ups
- You could provide a voltage reference. - mobiasloop 05:08:15 11/10/14 (1)
- More: Here is an example with a voltage reference - mobiasloop 12:36:44 11/11/14 (0)
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