Hello everyone,
I'm wanting to build circuit with 555 timer in A-stable mode.
I want the frequency to change within a couple seconds, automatically, instantly as the circuit is switched ON. And to repeat again, IF turned OFF/ON as a cycle.
Specifically, I need R2's resistance to self-change from 500K to 100K within a couple seconds...
could I just parallel 3 or 4 different charge-up caps (basic RC circuit??)
Thanks, Marty
I'm wanting to build circuit with 555 timer in A-stable mode.
I want the frequency to change within a couple seconds, automatically, instantly as the circuit is switched ON. And to repeat again, IF turned OFF/ON as a cycle.
Specifically, I need R2's resistance to self-change from 500K to 100K within a couple seconds...
could I just parallel 3 or 4 different charge-up caps (basic RC circuit??)
Thanks, Marty