Can you explain how to check the adapter if pins 1&8 are connected? Which settings and values on the multimeter?
The pins are easy to identify - they are on each side of the ridge on the guidepin.
If they are not connected you can put in a little jumper wire connecting those pins.
Hi mordy,
I was checking continuity with my multimeter. My picture was misleading because I was showing the bottom of the adapter, which is wrong, I should make a picture of the top side. The pinout is this one:
As far as I know, to be able to use EL34 in this adapter the supressor grid (G3) has to be connected to cathode (this is how you strap a pentode to triode).
I checked my adapter as connections are as follows, pin 1 from top of the adapter (6V6) is not connected to anything on the bottom:
This works perfectly for 6V6 (KT66,88 and so on) but for EL34 the pin 1 from top I was expecting to be connected to pin 6 from bottom.
So if we connect pin 1 with pin 8 on the top, pin 8 being connected to pin 6 we are connecting G3 to cathode.
This is how I understand this, if I am wrong please correct me.