Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Here is a hint. The resistor at the left is a thermistor whose resistance changes as a function of temperature. Thus this circuit is an audio oscillator whose output frequency varies with temperature. The potentiometer across the thermistor sets the oscillation frequency at a specific...
I suspect the capacitor is needed for stability of the reference, just the same as a voltage regulator that needs a minimum capacitance at it's output. Check the data sheet for the chip. Another possibility is that it is needed to provide a momentary pull up during power up. Perhaps both...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
