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已发布大约 8 年前

$10-30 USD

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I need an electronic design of a simple delay circuit that would delay the output of a preamp for 30 seconds at power ON and again when the RESET pin gets a short impulse. The specific is that for the 30 seconds delay I want a red LED to blink once/second, and at the end of the 30 seconds a green LED will switch ON together with a low power relay. It will power at 12V and will be made of inexpensive parts preferable one IC. All I need is the schematic in PDF.
项目 ID: 9953068

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远程项目
活跃8 年前

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$25 USD 在1天之内
0.0 (0条评论)
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4 freelancers are bidding on average $52 USD for this job
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Hi. I am a professional Electronics Engineer having expertise in Electronics Circuit and PCB designing. Contact me and get your timing delay circuit ASAP. Waiting for your reply.
$40 USD 在0天之内
4.6 (14条评论)
4.8
4.8
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Orion Engineering Services provides professional engineering and technical services for a wide range of industrial sector clients. Complementing the comprehensive projects Orion perform Orion have extensive expertise Orion Expertise Fabrication Fabrication and Erection of Cable Trays, Providing Installation & commissioning Of L.V & HV. Panels, Power Factor improving (PFI) Panels, distribution Panels, MCC Panels, ATS/AMF Panels and PIB Panels, Pressure transmitter Stands & Sun shade’s, HV & LV Bus Bar, Generator Bus Bar Installation Industrial Equipment Installation, Industrial instrumentation Installations, Generator Installation, Electrical Wiring, Cable Tray Installation, Fabrication & Installation of lightning & Grounding System, Air-conditioning Installation, CCTV Installations, Panels Installations, Bus Bar Installations. Repair & Service AC/DC Motors Troubleshooting, Repairing and Rewinding, ATS Cards Repairing, Electrical Wiring System Maintenance, Load Testing Units Servicing, Electrical Panels, UPS and Control Cards Repairing and Similar Other jobs. Specialization All Kind Of Power Plants, Waste Heat & Coal Fired Boilers, Turbine Instrumentation Cement Plants Erection, Testing, Commissioning, Troubleshooting process & shutdown Maintenance. Orion’s are master in industrial automation & control system Orion’s also brilliant team which play 132KV,6.3KV HV & LV
$30 USD 在1天之内
0.0 (0条评论)
0.0
0.0
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My bid may be a little higher than others, but I will want to chat to ensure I have requirements right, and will want to simulate and or prototype it to ensure it works before handing it over to you. So I'd have to buy some parts. I'm an EE of 20+ years in scientific, medical, and petrochemical instrumentation. I work full time and do freelancing on the side. I find that freelancing exposes me to new ideas and helps me build my experience. I'm having a lot of fun doing it. You may look me up and connect with me on LinkedIn if you wish. I am Rick Barfield of Austin, TX, USA.
$111 USD 在1天之内
0.0 (0条评论)
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UNITED STATES的国旗
Tustin, United States
5.0
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会员自5月 8, 2009起

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