I am looking for an electronic timing circuit that will detect a phone line pick up (usually a ring voltage of 12v). Once a pick up is detected, the circuit will then start a timer that will trip a relay at the end of the timed period (which connects two points for a instant) then reset and wait again for the next phone line pick up. The timer on this board would be best if it was a variable timer that could be set anywhere from 0 to 30 minutes. (or it may just have presets like a 15 minute timer and a 30 minutes timer switch on it.)
My name is Paul and this is just a possible solution for what is being done manually at this time.
18 freelances font une offre moyenne de 151 $ pour ce travail
Best Circuit Design Expert at your doorstep! Dear Paul, We have lots of experience designing in Circuit and we can provide Electronic Timing Circuit for detect Voltage 12 VC and Phone line pick up as per your require Plus
Thanks for Freelancer which gives chance to meet you. I hope you are good. I have read your description carefully and understand everything. I have 12 year experience on analog design, microcontroller coding and PCB d Plus
FREE OF COST CONSULTATION Dear Paul, I am an Electronic Circuit designer and I will provide Electronic Timing Circuit who will detect a phone line pick up with using voltage of 12v in a quality and timely manner. Pleas Plus
Dear you, I have 9 years to design circuit. We can discuss more on chatting. I can do it at my best. Brg!
Hi, This phone line you are mentioning is a landline phone right? and not mobile phone . I have worked on this similar device for home automation using telephone line using a ring detector circuit and a DTMF decoder ci Plus
Hi, I am a electronics and communication engineer with more than 2 years of experience in PCB and Circuit Designing. I have worked on many projects in past. Here are some software I have used for Circuit/Pcb Designi Plus
Hi I am embedded system engineer with 7 years of experience and i can help you design the circuit, and the firmware. It will be easy to install and configurable. Let me know if you are interested
Dear client I'm interested in your project and I can do it with the perfect method and time. I'm an expert in the design and development of analog RF and digital integrated circuits using Cadence virtuoso, cadence Orca Plus
Electronics Design Expert here I read your requirements and I understand that you want to design electronic timing circuit for phone pick up call. Yes I will design it for your because it need to use the Bluetooth modu Plus
Greetings, I am honored to get this opportunity of being able to assist you in your project. I have gone through your project brief and understand your project requirements. I am an electronics engineer having over t Plus
Dear Paul I would like to present myself as prospective candidate to do your project. I have sound knowledge and experiences in designing Electronic Circuits, Designing PCB and also Micro-controller programming. Also Plus
Hello. I read your description carefully. I think I can do it successfully. We can use simple MCU with timing functionality. The pick up signal can be entered to a ADC pin of the MCU via resistor divider circuit. As so Plus
Hello, I have interesting with your project. I have rich experience with MicroController and PCB Layout. This is my major in university. Please send me a chat for this project. I 'm waiting for your answer. Thanks.
Hi Paul, I understand the problem you are referring to and I can design a time circuit that you can change as you want and the output that you need. I can give all the files needed to print your PCB JLCPCB. If you want Plus
The PCB you describe is very similar to something I already done in the past for a different application. Therefore I am sure I can help you. I am quite new in this website but I have great experience in PCB design.
We can adjust the time setting with potentiometer or serial port. For the relay, you need to answer the following questions. Load Voltage=? Load Current=?
I'm thinking a voltage divider that goes into a PIC microcontroller and that will also do whatever timing you want. You'll have to tell me what your budget on components are and then I can start with general BOM before Plus