Take a look at http://www.g4jnt.com/137tx.pdf All the equations you need are in there and "single ended" in that context refers to class A / B not E Class E is a special (quasi resonant) type of sw
The plot below and also to be found at http://www.g4jnt.com/DropF/clipboard_201803301751.png shows the phase and amplitude of the MSF 60kHz signal received here on the south coast over a period of
http://www.g4jnt.com/DropF/clipboard_201803301751.png shows the phase and amplitude of the MSF 60kHz signal received here on the south coast over a period of 5 hours. Whilst I would expect phase c
While I'm still on a roll with high stability off-air monitoring, here is a plot of the one remaining 100kHz transmission, from Anthorn, taken overnight. http://www.g4jnt.com/DropF/clipboard_20180
Done, verified that it looks OK with scope. (Previously I had not been testing with the DC offset!) I've reduced drain voltage to 13V so that I can do that. I have no dummy load which can handle
I'm a bit late coming to this discussion, but that ringing looks exactly like that you get when there is too much leakage inductance in the transformer. It is common to see such waveforms in SMPSUs
Everyone, stop, think. Stop clutching at straws Ringing like that, showing several cycles of oscillation has to be caused by a resonance at a higher frequency than the wanted one. Resonances are cau
Try this http://www.g4jnt.com/DropF/simpletimer.zip It lets you abort the on time using the [esc] key Source code is in there as well All in PowerBasic, command line compiler version (By far the nic
Just in case it matters, I initially test for all valid COM ports by opening and closing each in turn, then testing for an error. If that causes problems to anything on another port that has not
Yes, if you run it from a windows click, the whole thiing will close when it goes off and completes. Were you to run it from a command prompt, it would then merely say "OFF" and sit there looking unl
There is now a prettier version at http://www.g4jnt.com/DropF/simpletimer.zip Same functionality, except it also allows HH:MM as well as HH:MM:SS Andy On 11 April 2018 at 13:24, Chris Wilson <dead.f
I used to have quite a few of an older type of those - given to me surplus. An RS232 drive signal will drive one quite happily - they are designed to be driven from logic signals. The 25A rating wo
I'd lay quite good odds on those control boards having USB COM ports chips. They could use the USB directly in HID mode, but then driver software has to use all the USB interfacing drivers etc. Wh
Yes, I agree with Alan and fail completely to see why the driver should have any effect on the ringing. It just cannot. As I keep saying, such ringing is commonplace in SMPSUs and is due to leakage
http://www.lz1aq.signacor.com/ For LF use you could probably increase coupling caps and use a bigger loop, and change the input LPF This is the one members of our club (IVARC) have been making as a c
More accurately, this is the URL http://www.lz1aq.signacor.com/docs/wsml/wideband-active-sm-loop-antenna.htm 'jnt On 16 April 2018 at 12:56, Andy Talbot <[email protected]> wrote: http://www.lz1aq
The irony here is that class-E does not mandate a short sharp gate drive. As it is tuned and adjusted for zero Drain volts at the transition, the shape of the drive is less critical. So says Fred Ra
Have you checked it with any of your other COM ports? Check DTR and RTS both toggle appropriately Andy www.g4jnt.com On 26 April 2018 at 20:29, Chris Wilson <[email protected]> wrote: Hello Andy,
