0
\$\begingroup\$

I want use Electret microphone Pre-amplifier described in TI document, with Color light organ. Will the output level of this pre-amp enough to drive LM324 Op-Amps on Color organ? Input signal goes to VR1 "Master level" potentiometer. Also, is the standard Line level output of consumer audio electronics enough for connecting it to VR1?

enter image description here

\$\endgroup\$
  • \$\begingroup\$ Rerun your simulation with a 1.6k resistor in parallel with your 100k resistor. 4 10k pots in parallel are the equivalent of 2.5 k. With these tied to the wiper of VR1 (5k) the worst case input load is 1.67k. \$\endgroup\$ – WhatRoughBeast Dec 20 '16 at 0:50
  • \$\begingroup\$ I want modify pre-amp for 12V, so I calculated R1 and C3 values based on formulas (9) and (11) respectively, and got R1 = 21kΩ and C3 = 1.51uF. Is that correct? What will be the output voltage of the op-amp with 12V power supply? \$\endgroup\$ – minto Dec 21 '16 at 23:12

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.