At least ones I could afford. Pretty sure RF tubes are way outside my pocket to buy for no reason! The 813 was a broken tube i bought for a few dollars, next to it a “5670”… (Er i don’t think I can say which country it is from?) which is about the size of a 12AU7!
Ah and the one on the left is a diode. Might be a thyratron without a gate. Belongs in a family of thyratrons and it works down to 12v! Only issue is that the heater is 18amps and I don’t have a power supply that can supply 18amps down to 2.2v… That is not a E27 base by the way, E27 isn’t this large!
If you’re interested in the obscure tubes I have I’m willing to post them up here
At least ones I could afford. Pretty sure RF tubes are way outside my pocket to buy for no reason! The 813 was a broken tube i bought for a few dollars, next to it a “5670”… (Er i don’t think I can say which country it is from?) which is about the size of a 12AU7!
Ah and the one on the left is a diode. Might be a thyratron without a gate. Belongs in a family of thyratrons and it works down to 12v! Only issue is that the heater is 18amps and I don’t have a power supply that can supply 18amps down to 2.2v… That is not a E27 base by the way, E27 isn’t this large!
If you’re interested in the obscure tubes I have I’m willing to post them up here