This is a reply to Paul’s question.<\/p>\n
After all the experimenting you have done since this was first designed, do you still favour a SJT over a conventional JT routinely, or can the extra components be circumvented by a different coil design or optimised transistor specification.<\/p><\/blockquote>\n
The SJT has the feedback winding connected to the circuit, whereas the conventional JT has the winding connected to the positive, which allows it to be connected to a controlling circuit such as the one in my Blue Blinky.\u00a0 The SJT can’t be controlled like that , however I have the SJT flasher<\/a>.\u00a0 Point is that the SJT has some limitations that the conventional JT doesnt’t have.\u00a0 For a non-experimental use (flashlight or torch) the SJT can to a better job than the conventional.\u00a0 But I\u00a0 often want to experiment and then I find that the SJT circuit gets in the way, so to speak.\u00a0 So I often use the conventional JT for experimenting.<\/p>\n
The components broadly tune the SJT so they can’t be circumvented as far as I know.\u00a0 The transistor may help but as far as I know it doesn’t change the SJT’s need for the capacitor to broadly tune it.\u00a0 I’ve used various coils and the SJT circuit works with most of them.\u00a0 The air core coil seems to have some quirkiness, if I remember correctly from Quantsuff’s website<\/a>.<\/p>\n
Some people like me drive a car because it’s a car.\u00a0 Some people prefer a Beemer over a Jaguar or vice versa.\u00a0 But in electronics, I guess I perceive some things in my own way that the average experimenter doesn’t.\u00a0 So perhaps, in electronics I should be compared to those that prefer a Jaguar over a\u00a0 Beemer, so to speak.\u00a0 I often try to help, but I get a lot of negative feedback from others that they don’t like or need my help.\u00a0 And they then burn up transistors by the gross.\u00a0 So let ’em keep making the same mistakes over and over again!\u00a0 I told you so!\u00a0 Sort of like the townspeoples’ opinion of Gandalf.<\/p>\n","protected":false},"excerpt":{"rendered":"
This is a reply to Paul’s question. After all the experimenting you have done since this was first designed, do you still favour a SJT over a conventional JT routinely, or can the extra components be circumvented by a different coil design or optimised transistor specification. The SJT has the feedback winding connected to the <\/p>\n
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