unrealdave wrote:When I put a meter across the anode and earth I got a reading of 120 volts dc (but the anode was negative). I thought the anode only passed positive cycles?
Crackle wrote:Same here Dave, that seems to only work in a silicon diode9the band is the + end), but in a valve radio the 2 anodes are connected to the AC from the transformer and the cathode is the + HT supply.
Hopefully someone will give us a simple explanation, or point out where I am wrong
Is that a Bakelite case?
Terrykc wrote: Dave, the reason that there is nothing connected to the 'grid pin' is that diodes don't have grids!
unrealdave wrote:... why is the anode always connected to HT +ve in my battery sets?
unrealdave wrote:...Is it correct then to connect the -ve of the electrolytic to the anode line and the +ve to the line I consider the earth?
unrealdave wrote:...Why would I get 240v when its all connected up but 120v with no smoothing?
Herald1360 wrote:Of course there's nothing to prevent you from doing this, which could have some bearing on negative at the anode......
unrealdave wrote:... I thought the anode only passed positive cycles?
Herald1360 wrote:If the half wave valve rectifier is floating on the secondary of a transformer, it doesn't matter whether it's connected with anode to TX giving +dc from the cathode and -dc from the other end of the secondary or cathode to the TX giving -dc at the anode and +dc from the other end of the secondary. Ground can be connected to the -dc point in either case ...
Terrykc wrote:... having the valve at the earthy end would be very unusual, if not unique!
Terrykc wrote:Terrykc wrote:... having the valve at the earthy end would be very unusual, if not unique!
Well, well, well, who would have thought it?
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