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https://www.circuitlab.com/circuit/nxa68qng2ks9/rlc-current-source/

Set I1 to 1A. Peak voltage at resonance ~= 274V.

Set I1 to 1mA. Peak voltage should now be 274mV. Instead, CL maintains V at 274V.

This is normal, expected behavior for frequency-domain simulation. It's always relative to the source having amplitude 1. See this section of the documentation for more information.

ugh.

I think I should be able to address this by using a CCCS. However, the CCCS (and CCVS) have no input. How do I control the input to those sources?

I tried the VCCS but couldn't get it working at all either, even though it has inputs.