I am using a PWM chip. It has a pin where a capacitor and resistor are connected. This capacitor and resistor controls the switching frequency of the PWM signal. I have a control circuitary where i need to use the signal at this pin where the capacitor and resistor are connected. Whenever i try to connect my circuit i see random frequency being created. I suppose the circuit i connected is affecting the WM chip. I used a buffer to isolate it, but still the problem exists. Even when i connect oscilloscope to see the signal at this pin i see malfunctioning. do u have any idea how to use a signal at a pin without affecting the functioning of the chip. any suggestions... kristo
- posted
18 years ago