I bought a DTMF controller the schematic of which i've attached.
The four transistor outputs (Q1-Q4) go high and stay high
on tone detection, instead of the pulse I require.
They return to low only when the power to the controller is reset,
so i'm trying to find a delayed reset for power after the relay executes its contact closure. Please see the attached circuit i drew, will this work, if not,
any suggestions?
Haxxxx
The four transistor outputs (Q1-Q4) go high and stay high
on tone detection, instead of the pulse I require.
They return to low only when the power to the controller is reset,
so i'm trying to find a delayed reset for power after the relay executes its contact closure. Please see the attached circuit i drew, will this work, if not,
any suggestions?
Haxxxx
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