Hey. No idea whether you'll still be notified of this comment but thought it was worth a try. I can only find the Holtek 9200B as a surface mounted SOP but pics on your website look like you may have found a through-hole DIP package? I was just wondering if this is indeed the case where you fond the part. Thanks in advance...
can i have a favor? i am a student in electronics engineering., can u help me, please give me some circuit diagram for the dtmf encoder., the scenario of our project is there have a signal frequency from our first circuit, the water level sensor., per sensor, there have a corresponding frequency, how to interface the individual frequency signal produce by a water level into a dtmf encoder., can can u give me some circuit?? please please?? please pass in ianmillana24@yahoo.com
Hey. No idea whether you'll still be notified of this comment but thought it was worth a try. I can only find the Holtek 9200B as a surface mounted SOP but pics on your website look like you may have found a through-hole DIP package? I was just wondering if this is indeed the case where you fond the part. Thanks in advance...
sar02sar02 2 weeks ago
@sar02sar02 Yes your right I think they stopped making the DIP Package.
But you still may be able to find suppliers with stock.
I bought mine from "futurlec"... Google them and see if they have any left.
jakeontheweb 2 weeks ago
@jakeontheweb Ah ok. Thanks for your help man
sar02sar02 2 weeks ago
can i have a favor? i am a student in electronics engineering., can u help me, please give me some circuit diagram for the dtmf encoder., the scenario of our project is there have a signal frequency from our first circuit, the water level sensor., per sensor, there have a corresponding frequency, how to interface the individual frequency signal produce by a water level into a dtmf encoder., can can u give me some circuit?? please please?? please pass in ianmillana24@yahoo.com
54mmstock 5 months ago
@54mmstock check out my website. go to projects and you can find the info for this circuit there..
The link should be in the more info section on this page.
jakeontheweb 5 months ago
can i put the output as IR transmitter from the first DTMF nd on the other side DTMF with an IR reciever as an input?
circassianlife 2 years ago
To wirelessly transmit a DTMF tone?
I understand the principle, but I dont know if it will work.
Ask the question at electro-tech-online(dot)com
someone will be able to answer that there.
jakeontheweb 2 years ago