hi people, i tried to use an LM380 to get a gain of 50. i applied a sine wave of 0.4Vpp bt at the output i got a 6.4Vpp signal instead of a 20Vpp signal...... though my Vcc was 15V so i couldnt get 20Vpp bt still 6.4Vpp is way less than it should have given me..... i used the schematic attached..... i performed the ckt in a lab and grounded all of its pin that were meant for grounding.....
i also observed this that whenever i took my hand near to the circuit the noise in the output suddenly increased very high..... i dont know what mistake was there....
i also observed this that whenever i took my hand near to the circuit the noise in the output suddenly increased very high..... i dont know what mistake was there....
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