{"product_id":"shelyak-pf0082","title":"Shelyak Instruments High Voltage Power Supply","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMaximum Output Voltage: 310V DC\u003c\/li\u003e\n\u003cli\u003eAdjustable Current Range: 1 mA to 35 mA\u003c\/li\u003e\n\u003cli\u003eRequired Input Power: 12V DC, 2A (not included)\u003c\/li\u003e\n\u003cli\u003eInternal 2A Fuse for Polarity Protection\u003c\/li\u003e\n\u003cli\u003eWeight: 540g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eShelyak Instruments High Voltage Power Supply\u003c\/h2\u003e\n\u003cp\u003eThe Shelyak High Voltage Power Supply delivers a regulated DC output of up to 310 V and an adjustable current from 1 to 35 mA, engineered specifically for exciting spectral calibration lamps. It operates from a standard 12V DC input (2A or more) and features a 2A internal fuse for reverse polarity protection. Housed in a compact 172 x 106 x 60 mm chassis, this 540g unit is the core component for powering a wide range of gas discharge lamps used in astronomical spectroscopy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e310V Output \u0026amp; 1-35mA Current Control for Spectral Lamps\u003c\/h3\u003e\n\u003cp\u003eThis power supply provides the two critical functions for operating spectral lamps: high-voltage ignition and stable current regulation. The maximum 310 V output is sufficient to excite gases that require a high ignition voltage, such as Thorium (\u0026gt;230V), while also easily handling lamps like Neon which ignite around 60V. Once the gas is excited, you can precisely dial in the operating current between 1 mA and 35 mA to achieve a stable, consistent light source for your calibration frames, with a built-in power limitation to reduce the risk of damaging the lamp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBroad Lamp Compatibility for Shelyak Spectrographs\u003c\/h3\u003e\n\u003cp\u003eDesigned for versatility, this unit can power nearly any gas lamp used in amateur and research spectroscopy. It is the standard power source for hollow cathode lamps (HCL) like Thorium-Argon used with the eShel and Whoopshel spectrographs, and also for the Neon or Argon-Neon lamps used with the LISA, Lhires III, and UVEX spectrographs. Note that the required 12V DC power brick and specific output cables for your lamp are sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the Shelyak High Voltage Power Supply?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis unit is designed to power \u003cstrong\u003espectral calibration lamps\u003c\/strong\u003e used in astronomy. It first provides a high voltage (up to 310V) to excite the gas inside the lamp (e.g., Neon, Argon, or Thorium), and then maintains a stable, low-level current (1-35 mA) to keep the lamp lit for acquiring calibration data with a spectrograph.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of input power adapter do I need for this High Voltage unit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a separate \u003cstrong\u003e12V DC power supply\u003c\/strong\u003e capable of delivering at least \u003cstrong\u003e2A\u003c\/strong\u003e of current. The connector must be a \u003cstrong\u003e5.5\/2.5 mm barrel plug\u003c\/strong\u003e with a center-positive polarity. This power adapter is not included with the unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a special cable to use this power supply with my Thorium-Argon lamp for an eShel spectrograph?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. When using this power supply with a hollow cathode lamp (HCL) like a Thorium-Argon lamp, you must use the specific \"cable for hollow cathode lamp\" (Shelyak ref. SE0268), which is sold separately. For other lamps, a 3-pin male connector (ref. EL0334) is available to build a custom cable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy are both high voltage and adjustable current important for the High Voltage Power Supply?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDifferent gases require different conditions to operate correctly.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Voltage (up to 310V):\u003c\/strong\u003e This is needed for the initial ignition of the gas. Thorium, for example, requires over 230V to start, while Neon only needs about 60V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Current (1-35mA):\u003c\/strong\u003e After ignition, the lamp runs on a steady, low current. This needs to be set to the lamp's specification (e.g., ~10mA for Thorium) for stable light output and to maximize lamp life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this High Voltage Power Supply for my Neon calibration lamp on a Lhires III?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This power supply is fully compatible with the Neon or Argon\/Neon lamps typically used with the Shelyak Lhires III, LISA, and UVEX spectrographs. You will need to ensure you have the correct output cable to connect the power supply to your specific lamp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat safety features does the Shelyak High Voltage Power Supply have?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary safety features are an internal \u003cstrong\u003e2A fuse\u003c\/strong\u003e, which mainly protects against reverse polarity on the 12V input, and an internal power limitation circuit designed to reduce the risk of overpowering and damaging your expensive spectral lamps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output Voltage\u003c\/td\u003e\n\u003ctd\u003e310 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustable Current Range\u003c\/td\u003e\n\u003ctd\u003e1 to 35 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Input Power\u003c\/td\u003e\n\u003ctd\u003e12 V DC, 2A (or more)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Connector\u003c\/td\u003e\n\u003ctd\u003e5.5\/2.5 mm, Center Positive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Fuse\u003c\/td\u003e\n\u003ctd\u003e2A (Reverse Polarity Protection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e172 x 106 x 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e540g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Shelyak_eShel_Calibration_Power_Supply_Addendum_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eShelyak eShel Calibration Power Supply Addendum Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/shelyak-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eShelyak 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52943040577821,"sku":"SHK-PF0082","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Shelyak-High-Voltage-Power-Supply-1_03ab6e8b-e668-4947-bff2-7e3a4661673a.jpg?v=1789616145","url":"https:\/\/davidastro.com\/fr-us\/products\/shelyak-pf0082","provider":"David Astro","version":"1.0","type":"link"}