T
twilightzonepinball
- Jan 1, 1970
- 0
Hello,
My name is Tom and I am new to this group. Please forgive my
newbieness. I am an Industrial controls tech with limited electronics
knowledge.
I was hoping I could get some help designing a simple tone generator
for a unique application. I have so far built a simple tone generator
using a 555 timer chip and some resistors and caps with a circuit I
found online. I am using pin 5 to control it as a VCO astable.
Everything works great, the input dc voltage is varying the tone, but
I want the frequency to go up with voltage. Kind of like an audio
voltage monitor. This input voltage is about 0-14 volts. The problem
is that the frequency goes down when the voltage goes up. Just the
opposite of what I need.
Can anyone suggest a solution?
Thanks in ad advance,
-Tom
My name is Tom and I am new to this group. Please forgive my
newbieness. I am an Industrial controls tech with limited electronics
knowledge.
I was hoping I could get some help designing a simple tone generator
for a unique application. I have so far built a simple tone generator
using a 555 timer chip and some resistors and caps with a circuit I
found online. I am using pin 5 to control it as a VCO astable.
Everything works great, the input dc voltage is varying the tone, but
I want the frequency to go up with voltage. Kind of like an audio
voltage monitor. This input voltage is about 0-14 volts. The problem
is that the frequency goes down when the voltage goes up. Just the
opposite of what I need.
Can anyone suggest a solution?
Thanks in ad advance,
-Tom