In terms of this wheel and 12 volts.
IMHO – the collapsing field of the power winding does not go into the trigger with this wheel.
In these 12 volt systems w/ a good battery or capdump, I believe although the radiant flows everywhere, we have opened a path for the conventional current to be corralled and allowed to flow through those charging diodes on to the battery or cap. This can change if we add undesirable impedance. Put a scope across the trigger and you can see why I think this is so. I do not see any interaction. The collapse is in a different direction than the base of the transistor needs to turn on. In order to go into a “controlled” solid state mode, we need to move the trigger from primary – to primary +.
OK Patrick so why does the ckt go into self-oscillation when you have too much resistance on the base, or impedance mismatch in the coils, etc...? I’m not even going to try to answer this one for risk of contradicting myself :-)
Guy is right, you can put a switching diode E/B (emitter to base) and the ckt will self-oscillate based on the diode specs and Single wire coil you are using. That’s right one wind – no trigger other than the switching diode.
The pendulum allowed us to change many things on the fly to experiment with. One thing we played around with was the magnet. The larger the magnet the more spikes you get independent from the speed and distance from the core. One job of the E/B diode is to turn the transistor off, however, it can only fend off the energy from the passing magnet for so long. That’s why I was not able to tune the wheel to 1 spike earlier. When I pulled the coil away from the wheel, the magnet was not allowed to influence the trigger long enough to prevent me from getting it down to 1 spike.
I think this is all very relevant to this thread as well as Bobs thread. I think this is where tuning falls apart and most lose hope with the wheel or maybe I’m just projecting here…
Ok more fussy tuning stuff. JB giving us the light bulb worked out for a couple of good reasons. It’s a great self-servo addition to the ckt for those w/ little primaries (sorry it’s true). We all know, however, there is more than one way to skin a cat... the bulb helps keep the ckt in tune as the primary voltage decreases during a run. He also knew many of us would not have a scope.
good morning all or good night?
Patrick A.
IMHO – the collapsing field of the power winding does not go into the trigger with this wheel.
In these 12 volt systems w/ a good battery or capdump, I believe although the radiant flows everywhere, we have opened a path for the conventional current to be corralled and allowed to flow through those charging diodes on to the battery or cap. This can change if we add undesirable impedance. Put a scope across the trigger and you can see why I think this is so. I do not see any interaction. The collapse is in a different direction than the base of the transistor needs to turn on. In order to go into a “controlled” solid state mode, we need to move the trigger from primary – to primary +.
OK Patrick so why does the ckt go into self-oscillation when you have too much resistance on the base, or impedance mismatch in the coils, etc...? I’m not even going to try to answer this one for risk of contradicting myself :-)
Guy is right, you can put a switching diode E/B (emitter to base) and the ckt will self-oscillate based on the diode specs and Single wire coil you are using. That’s right one wind – no trigger other than the switching diode.
The pendulum allowed us to change many things on the fly to experiment with. One thing we played around with was the magnet. The larger the magnet the more spikes you get independent from the speed and distance from the core. One job of the E/B diode is to turn the transistor off, however, it can only fend off the energy from the passing magnet for so long. That’s why I was not able to tune the wheel to 1 spike earlier. When I pulled the coil away from the wheel, the magnet was not allowed to influence the trigger long enough to prevent me from getting it down to 1 spike.
I think this is all very relevant to this thread as well as Bobs thread. I think this is where tuning falls apart and most lose hope with the wheel or maybe I’m just projecting here…
Ok more fussy tuning stuff. JB giving us the light bulb worked out for a couple of good reasons. It’s a great self-servo addition to the ckt for those w/ little primaries (sorry it’s true). We all know, however, there is more than one way to skin a cat... the bulb helps keep the ckt in tune as the primary voltage decreases during a run. He also knew many of us would not have a scope.
good morning all or good night?
Patrick A.
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