Hi !
I'm working to simulate a problem (driving 4ohm 10Watt speaker from AB-Amplifier).
I'm using LM741 to first amplify the voltage(0.2v) a bit, then power amplifier to increase the power for 10watt speaker.
I'm done with required output results.
But, in simulating it on LTspice, i've issue generating 20mA signal from voltage source.
Can anyone help me with a way to theoretically make calculations/ adjustments to generate the 20mA signal for input. (for simulation)
Actually, a hit & trial gives 20mA at 20V input (as shown in picture)... While 200uA at 0.2V
How can i get 20mA from 0.2V (without disturbing inverting amplifier circuit) ?
The circuit is as follows:
I'm working to simulate a problem (driving 4ohm 10Watt speaker from AB-Amplifier).
I'm using LM741 to first amplify the voltage(0.2v) a bit, then power amplifier to increase the power for 10watt speaker.
I'm done with required output results.
But, in simulating it on LTspice, i've issue generating 20mA signal from voltage source.
Can anyone help me with a way to theoretically make calculations/ adjustments to generate the 20mA signal for input. (for simulation)
Actually, a hit & trial gives 20mA at 20V input (as shown in picture)... While 200uA at 0.2V
How can i get 20mA from 0.2V (without disturbing inverting amplifier circuit) ?
The circuit is as follows:
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