The circuit below is a PW modulating circuit:
The output of the circuit is:
But when I connect a resitive load to the output of the op-amp. The output vanishes:
Can someone explain why is it happening so?
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1\$\begingroup\$ The word "op-amp" is an abbreviation of "operational-amplifier". It's not an initialisation so it doesn't get capital letters. \$\endgroup\$– TransistorCommented Jun 5, 2020 at 19:41
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\$\begingroup\$ Is it so,Thank you. \$\endgroup\$– Newton NadarCommented Jun 5, 2020 at 19:42
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\$\begingroup\$ What about my question? \$\endgroup\$– Newton NadarCommented Jun 5, 2020 at 19:43
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1\$\begingroup\$ It may depend on the value of the resistive load. \$\endgroup\$– user16324Commented Jun 5, 2020 at 19:46
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5\$\begingroup\$ U2 and B1 are not connected to ground. \$\endgroup\$– TransistorCommented Jun 5, 2020 at 19:47
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1 Answer
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Figure 1. B1 and U2 are missing their ground connection.
answered Jun 5, 2020 at 19:49