Hi! Just a quick tip, that might be useful: in LTspice, you can plot measurements vs step parameters. If you open the error log, right click on its window, then there is an option on the context menu for plotting measurements. Hop you find this useful
@LightningHelix1012 жыл бұрын
Need to come back and watch these later, but these are a true asset. Let me know if you ever want an extra set of hands to build simulations or brainstorm test fixtures.
@bigg24412 жыл бұрын
These videos are always great to watch and really informative. You teach very well. Many thanks.
@vincei42522 жыл бұрын
Excellent explanation especially the matched NPN phase splitter / combiner topologies.
@acestudioscouk-Ace-G0ACE2 жыл бұрын
Great tuition as usual, thanks for making these videos.
@m1geo2 жыл бұрын
Excellent as always! Keen for part 2.
@olivierconet79952 жыл бұрын
Very nicely explained, thanks. I am going to try this bifilar transformer configuration right away (for my few mW WSPR beacon). I can't wait for the next video !
@nickst27972 жыл бұрын
I hope more classes are coming next. Like AB...
@gkdresden Жыл бұрын
In fact these are all current amplifiers only. The voltage amplification is always less or equal to 1.
@naelnassar93302 жыл бұрын
Thanks for your Excellent Explanation, If I have RF high power Amplifier Class C Can I changed to class AB
@vincei42522 жыл бұрын
@FesZ how do you model the bifilar transformers in LTSpice? This will be a game changer for me to be able to model some circuits that I've seen with trifilar windings that confuse the heck out of me.
@FesZElectronics2 жыл бұрын
Well, its a 1:1 (or 1:1:1 for the trifilar) transformer - so it can be modeled like any other transformer with a "K" statment (no "." at the begining). A 1:1 100uH trafo is built with 2 100uH inductors, say L1 and L2 and the statement "k l1 l2 1" (for an ideal coupling factor of 1); for trifilar, its the same, just add the 3rd inductor to the K statement.
@fakulol01862 жыл бұрын
Very good
@jj74qformerlyjailbreak32 жыл бұрын
Hey Fez. What software are you using to plot these signals? I really like your in-depth explanations. You have taught me lots. I appreciate your inspiring teaching style and analysis. God Bless Friend.
@FesZElectronics2 жыл бұрын
I use LTspice for all my simulations. Its a free software.
@jj74qformerlyjailbreak32 жыл бұрын
@@FesZElectronics I’ll check it out. Thanks for your reply. God Bless.
@AllboroLCD2 жыл бұрын
Is it safe to say that a Class A, B, & A/B amp PCB could essentially look identical to the eye? The only real difference would be a few resistor values?
@FesZElectronics2 жыл бұрын
This is true with AB and B, but with A its not just a difference of component values - With class A, only 1 transistor receives the input signal, while the other acts like a constant current source. Now "to the eye" of course you can make all of them look identical, but in the schematic there will be differences.
@sinclair88112 жыл бұрын
@@FesZElectronics Hello, when are you going to produce next video about class B amplifier?
@Theineluctable_SOME_CANT2 жыл бұрын
Technically, these transistors are both operating in class C because their conduction angle IS LESS THAN 180 degrees. Class B is 180 degrees as you said but did not get right. Amateur.