Hi Keith,
Just want to say thank you for sharing your idea with us, as much as I would like to take on the task of developing/building the compressor I simply don't have the technical experience and knowledge to do so. However, I am definitely very interested in participating in the development of the piece and would love to see it built one day! :thumb:
Having been looking at the schematic for the last couple of days and having read your circuit description I think I got the idea of how this thing work. just got a couple of question about the 555.........
In the schematic you have the 555 in parallel with the rectified DC signal going into the LM319 comparator, basically modulating the pules width of the 555. I was just wondering is it possible to skip the LM319 and just use the 555 as monostable?
The reason being in the monostable mode as I understand it,
Pin 5 (Control Voltage)"By applying a voltage to this pin, it is possible to vary the timing of the device independently of the RC network." As shown in the data sheet Fig.8 PWM.
Pin 2 (Trigger): "This pin is the input to the lower comparator and is used to set the latch, which in turn causes the output to go high. " Can we use this pin as a control for Attack of the transient, just by adding a potentiometer to set the input voltage?
Feeding the rectified DC voltage into Pin. 2 and Pin. 5
Pin 6 (Threshold): "Pin 6 is one input to the upper comparator (the other being pin 5) and is used to reset the latch, which causes the output to go low. "
Again, can we use this pin as Release by attatching an potentiometer from Vcc to gnd for adjusting the timing of the pulse to go low.
Eventhough Pin 4 (Reset) does the same but may be we can leave that connected to Vcc, that's all for now will be back with some more braoin diggin :green: :thumb:
oh, for the pin description/explaination I got it from here. Have yet to find a more shorter/simpler pin function description/explaination.....
http://www.uoguelph.ca/~antoon/gadgets/555/555.html