Hi,
I have a question about TL431A.
[Setting Information]
Cathode Voltage: 5V
Cathode Current: 5.75mA
R1: 100k Ohm
R2: 100k Ohm
Load Capacitance: 10uF (capacitance in stable operation)
As the result of operaion test, output oscillation was appeared.
When I change resistor value for R1 and R2 to each 10k Ohm, the output oscillation was disappeared.
When I add an output capacitance to 5uF (total 15uF), the output oscillation was disappeared.
Could you advise me why it appears output oscillation when I use 100k Ohm resistors for R1 and R2?
Best Regards,
Hide