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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.

Beceriler: Elektronik, Elektrik Mühendisliği, PCB Düzen, Mikrodenetleyici, Devre Tasarımı

İşveren Hakkında:
( 0 değerlendirme ) Monroeville, United States

Proje NO: #30561248

Bu iş için 18 freelancer ortalamada $151 teklif veriyor

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 Daha Fazla

$250 USD in 2 gün içinde
(33 Değerlendirme)
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 Daha Fazla

$84 USD in 7 gün içinde
(23 Değerlendirme)
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 Daha Fazla

$200 USD in 2 gün içinde
(3 Değerlendirme)
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 gün içinde
(17 Değerlendirme)
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 Daha Fazla

$500 USD in 30 gün içinde
(11 Değerlendirme)
4.8
(13 Değerlendirme)
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 Daha Fazla

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(27 Değerlendirme)
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 gün içinde
(7 Değerlendirme)
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 Daha Fazla

$140 USD in 7 gün içinde
(4 Değerlendirme)
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 Daha Fazla

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(22 Değerlendirme)
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 Daha Fazla

$125 USD in 2 gün içinde
(9 Değerlendirme)
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 Daha Fazla

$150 USD in 7 gün içinde
(2 Değerlendirme)
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 Daha Fazla

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(1 Yorum)
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 gün içinde
(0 Değerlendirme)
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 Daha Fazla

$100 USD in 4 gün içinde
(0 Değerlendirme)
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 gün içinde
(0 Değerlendirme)
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 gün içinde
(0 Değerlendirme)
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 Daha Fazla

$140 USD in 7 gün içinde
(0 Değerlendirme)
0.0