Encerrado

I need a electronic circuit designed

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.

Habilidades: Eletrônica, Engenharia Elétrica, Layout PCB, Microcontrolador, Design de Circuito

Acerca do Empregador:
( 0 comentários ) Monroeville, United States

ID do Projeto: #30561248

18 freelancers estão ofertando em média $151 nesse trabalho

avigupta0061

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 Mais

$250 USD in 2 dias
(33 Comentários)
7.1
macroenergy

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 Mais

$84 USD in 7 dias
(23 Comentários)
5.5
HarimohanG

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 Mais

$200 USD in 2 dias
(3 Comentários)
5.2
pcbdesign88vn

Dear you, I have 9 years to design circuit. We can discuss more on chatting. I can do it at my best. Brg!

$50 USD in 7 dias
(17 Comentários)
4.7
sivom

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 Mais

$500 USD in 30 dias
(11 Comentários)
4.8
(13 Comentários)
4.7
JaibhanSinghGaur

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 Mais

$30 USD em 1 dia
(27 Comentários)
4.4
edi45

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

$150 USD in 3 dias
(7 Comentários)
4.0
BELMAJDOUB

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 Mais

$140 USD in 7 dias
(4 Comentários)
3.6
wjavaid046

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 Mais

$100 USD em 1 dia
(22 Comentários)
4.6
nuamansaghir

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 Mais

$125 USD in 2 dias
(9 Comentários)
3.3
isurutech

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 Mais

$150 USD in 7 dias
(2 Comentários)
3.4
MikM21

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 Mais

$80 USD em 1 dia
(1 Comentário)
1.4
ddmytrokk

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.

$150 USD in 7 dias
(0 Comentários)
0.0
amadurang

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 Mais

$100 USD in 4 dias
(0 Comentários)
0.0
felicc87felicc87

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.

$100 USD in 7 dias
(0 Comentários)
0.0
zahidizim

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=?

$120 USD in 7 dias
(0 Comentários)
0.0
JamesJrJS

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 Mais

$140 USD in 7 dias
(0 Comentários)
0.0