Setting Bias current for 20 Watt Class A Amplifier

In this video 'Setting Bias current for 20 Watt Class A Amplifier', I will show the math on how I come to the bias current level, and then I'll show the schematic to point out the parts involved. I'll then set the current level.#20Watt Class A bias current, #ClassABias, #ClassAAmplifierbiassetting, #AmplifierBiassettingexplained, #ClassAamplifierbias #20WattClassA

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[garydirkse]

Thank you for the great video. DC measurements with temperature too, just what I wanted to see. I have seen heat sinks saturate and temps rise over time without fans. We don't want fan noise. i have to see more videos.

[versace]

HI Eddie, another great video, thank you. 😁👍

[davet]

Great stuff …when playing music with class A. More power will be dissipated by speakers than sitting idle with no music ..so it should be slightly cooler at high volumes??

[handryraya]

hi edy, can you make video how to calculate efficiency of this amp in microcap.
maybe a series about amp measurement in microcap, thd, pssr, slewrate etc.

[raynerstuelgalid]

Hi, late to the game, but I am a learner.
You sort of gloss over the matter of "input signal".
So, I understand that one can feed a sine wave signal and adjust the quiescent current level to an ideal point as one watches the level of signal on an oscilloscope (to make sure biasing does not cause clipping/distortion, i.e., overdriven).

Questions: (1) Where on the amp board and how does one feed the test signal (say a 1 KHz sine wave from a signal generator), and (2) Where does one connect the oscilloscope's probe(s?) to acquire the signal for the oscilloscope to display? Thanks!

[LawsonsStudio]

May be I'm being really slow but you said you measured 85mA but the meter showed it was 85mV. How come where you measuring over a 1r resistor?

[palrajraj]

Hey Which op amp is best for lowpass subwoofer filters?

[VIPINSAINI_]

Can you share the schematic file for Micro-cap 12

[hoobsgroove]

Distortion is your friend when it comes to music all instruments/ recordings have distortion. 1% is quite acceptable

[audiogrouch]

i missed how we went from Volts to millivolts