I need a breadboard circuit that only utilizes either LM324N or NJM45556AD op amps and a simple power supply and resisto

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answerhappygod
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I need a breadboard circuit that only utilizes either LM324N or NJM45556AD op amps and a simple power supply and resisto

Post by answerhappygod »

I need a breadboard circuit that only utilizes either LM324N or
NJM45556AD op amps and a simple power supply and resistors,
capicators, and inductors to do the following note I do not have
transistors or any other op amps than the two described above
avaliable. This circuit must do the following on a breadboard
setup, if it is not on a breadboard than there will be no points.
This should be a fairly simple circuit with the understanding that
supplies are limited. The circuit should meet the following
3 sensor circuits (temperature, light and sound) and a level
indicator that lights up a number of LEDs based on the temperature
/ light / sound level (voltage of the signal).
Each sensor circuit will have an indicator LED turned on when
connected to the level indicator.
Level indicator should have at least 8 levels (zero LEDs turned on
when the signal level is very low, all 8 LEDS turn on for maximum
detectable level.)
(e.g. 0 LED = 0 sound, 8 LEDs for maximum sound level)
Sensitivity should be adjustable by using a single knob for each
sensor circuit.
Circuit will utilize +/- 4.5 V (or up to +/- 6 V) supply lines
(using a battery or power supply).
Sensors can be switched by moving wires. More elegant
implementations are welcome (e.g. using a single knob or
touch-sense to switch between the sensor circuits) and can earn 1
bonus point.
This must use a breadboard circuit to solve this problem.
Thanks for any help you provide
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