I am designing a two note synth using two channels...
Channel 1 = 555 timer in series with a lm386
Channel 2 = 555 timer in series with a lm386
I have built the circuit and it works with a separate 9 volt (variable) power supply for each channel rendering 0 amps on both power supplies.
What I will like to do is use one power supply for both channel 1 and channel 2.
I shared a node of vcc and ground for both channel 1 and channel 2.
I tried using a single variable dc power supply on both channels and I ended up measuring close to 1 amphere
on the amm meter on the variable dc supply and turned the voltage down before overloading the circuit.
Channel 1 and channel 2 have separate 8 ohm speaker outputs. I also hooked each output up to a mixer with headphones so I do not irritate the neighbors and disconnected the 8 ohm speakers. I continued to hook up my oscilloscope to measure the frequency of the waveform.
Can some please tell me the best solution for this problem.
Thanks
Channel 1 = 555 timer in series with a lm386
Channel 2 = 555 timer in series with a lm386
I have built the circuit and it works with a separate 9 volt (variable) power supply for each channel rendering 0 amps on both power supplies.
What I will like to do is use one power supply for both channel 1 and channel 2.
I shared a node of vcc and ground for both channel 1 and channel 2.
I tried using a single variable dc power supply on both channels and I ended up measuring close to 1 amphere
on the amm meter on the variable dc supply and turned the voltage down before overloading the circuit.
Channel 1 and channel 2 have separate 8 ohm speaker outputs. I also hooked each output up to a mixer with headphones so I do not irritate the neighbors and disconnected the 8 ohm speakers. I continued to hook up my oscilloscope to measure the frequency of the waveform.
Can some please tell me the best solution for this problem.
Thanks
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