{"title":"Lundahl Chokes - Induttanze di filtro","description":"\u003cp\u003eWe have a wide range of chokes and inductors for tube amplifiers, ranging from anode choke LL1667 (operating current from 5 mA) to filament current choke LL7233 operating at 3.4 A\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOur chokes are built in our dual coil single C-core style. The use of C-cores with well-defined air-gap results in an almost constant inductance throughout the whole operating voltage range.\u003cbr\u003eMost of our chokes can be ordered for operating current within about 10% of desired value (within a reasonable current range), even if this value is not presented in the data sheet. The column “Capacity” can be used to calculate the estimated resulting inductance for undocumented versions.\u003cbr\u003eFor example the LL1638\/300mA in serial connection will have an inductance approx. 1.5Vs \/ 0.3A = 5H.\u003c\/p\u003e\n\u003cp\u003eWhen measuring\/verifying the inductance in this type of chokes, make sure to use conditions similar to the operating conditions.\u003c\/p\u003e\n\u003cp\u003eWhen calculation the signal headroom in a power supply choke, the ripple voltage from a rectified sinus signal is approx. 42% of original RMS voltage. As long as max voltage ratings are not exceeded, all our power supply chokes can be used in choke input configurations. In applications where the current consumptions is almost constant (such as a class A amplifier), the input current spikes will be significantly less compared to a capacitor input supply.\u003c\/p\u003e","products":[{"product_id":"lundahl-ll1667-choke","title":"Lundahl LL1667 - Choke 270H \/ 15mA","description":"\u003cp\u003eInduttanza di carico anodico ad alta impedenza 270H 15mA. Nucleo a C\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628313362817,"sku":null,"price":140.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23852.jpg?v=1777976798"},{"product_id":"lundahl-ll1668-choke","title":"Lundahl LL1668 - Choke 100H \/ 25mA","description":"\u003cp\u003eInduttanza di carico anodico 100H 25mA. 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Nucleo a C -  VEDERE datasheet e SCRIVERE la variante desiderata nella sezione commenti dell'ordine\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628313723265,"sku":null,"price":140.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23855.jpg?v=1777976826"},{"product_id":"lundahl-ll1685-choke","title":"Lundahl LL1685 - Choke multipla 10-17H \/ 160-100mA","description":"\u003cp\u003eInduttanza di filtro per alimentatori da 2.5 a 17H da 100 a 460 mA. Nucleo a C. VEDERE datasheet e SCRIVERE la variante nella sezione commenti dell'ordine\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628313854337,"sku":null,"price":128.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23857.jpg?v=1777976835"},{"product_id":"lundahl-ll2742-choke","title":"Lundahl LL2742 - Choke multipla 42-4H \/ 100-600mA","description":"\u003cp\u003eInduttanza di filtro per alimentatori da 4 a 42H da 100mA a 500mA. Nucleo a C. VEDERE il datasheet e SCRIVERE la variante desiderata nel campo dell'ordine relativo ai commenti\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628313952641,"sku":null,"price":148.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23859.jpg?v=1777976845"},{"product_id":"lundahl-ll2771-choke","title":"Lundahl LL2771 - Choke multipla da 1.5 \/ 6H o 0.5A \/ 1.5A","description":"\u003cp\u003eInduttanza di filtro per alimentatori, da 1.5 a 6H da 0.5A a 1.5A. Nucleo a C. VEDERE il datasheet e SCRIVERE la variante desiderata nel campo dell'ordine relativo ai commenti\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628314083713,"sku":null,"price":238.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23861.jpg?v=1777976853"},{"product_id":"lundahl-ll1694-choke","title":"Lundahl LL1694 - Choke multipla 0.16H\/1.5A o 0.04H\/3A","description":"\u003cp\u003eInduttanza ad alta corrente per alimentazione filamenti valvole. 0.16H\/1.5A o 0.04H\/3A. Nucleo a C. VEDERE il datasheet e SCRIVERE la variante desiderata nel campo dell'ordine relativo ai commenti\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628314214785,"sku":null,"price":105.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23863.jpg?v=1777976862"},{"product_id":"lundahl-ll2733-choke","title":"Lundahl LL2733 - Choke multipla 0.4H\/1.7A o 0.1H\/3.4A","description":"\u003cp\u003eInduttanza ad alta corrente per alimentazione filamenti valvole0.4H\/1.7A o 0.1H\/3.4A. Nucleo a C. VEDERE il datasheet e SCRIVERE la variante desiderata nel campo dell'ordine relativo ai commenti\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628314345857,"sku":null,"price":135.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23865.jpg?v=1777976871"},{"product_id":"lundahl-ll2751-choke","title":"Lundahl LL2751 - Choke multipla 0.18H\/0.6A o 45mH\/1.2A","description":"\u003cp\u003eInduttanza di alimentazione per filamenti piccole valvole. 0.18H\/0.6A o 45mH\/1.2A. Nucleo a C. VEDERE il datasheet e SCRIVERE la variante desiderata nel campo dell'ordine relativo ai commenti\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628314411393,"sku":null,"price":103.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23867.jpg?v=1777976880"},{"product_id":"lundahl-ll2772-choke","title":"Lundahl LL2772 - Choke multipla 250-20mH \/ 2-10A","description":"\u003cp\u003eInduttanza ad alta corrente per alimentatori a bassa tensione, da 12 a 80 mH da 3 a 10A. Nucleo a C. VEDERE il datasheet e SCRIVERE la variante desiderata nel campo dell'ordine relativo ai commenti\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628314673537,"sku":null,"price":150.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23869.jpg?v=1777976888"},{"product_id":"lundahl-ll2773-choke","title":"Lundahl LL2773 - Choke multipla 2-10A \/ 160-16mH","description":"\u003cp\u003eInduttanza ad alta corrente per alimentatori a bassa tensione, da 16 a 95mH da 3.5 a 10A. Nucleo a C. VEDERE il datasheet e SCRIVERE la variante desiderata nel campo dell'ordine relativo ai commenti\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628314902913,"sku":null,"price":196.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/23871.jpg?v=1777976896"},{"product_id":"lundahl-ll1638am-choke","title":"Lundahl LL1638AM - Choke multipla 1-8H \/ 800-200mA - nucleo amorfo","description":"\u003cp\u003eInduttanza di filtro per alimentatori in nucleo amorfo\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628979437953,"sku":null,"price":380.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/28040.jpg?v=1777985848"},{"product_id":"lundahl-ll1667am-choke","title":"Lundahl LL1667AM - Choke 270H \/ 15mA - nucleo amorfo","description":"\u003cp\u003eInduttanza di carico anodico ad alta impedenza con nucleo amorfo 270H 15mA\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628979962241,"sku":null,"price":342.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/28049.jpg?v=1777985920"},{"product_id":"lundahl-ll1667nc-choke","title":"Lundahl LL1667NC - Choke 270H \/ 15mA - nucleo nanocristallino","description":"\u003cp\u003eInduttanza di carico anodico ad alta impedenza con nucleo nanocristallino 270H 15mA\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628979995009,"sku":null,"price":364.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/28050.jpg?v=1777985929"},{"product_id":"lundahl-ll1668am-choke","title":"Lundahl LL1668AM - Choke 100H \/ 25mA - nucleo amorfo","description":"\u003cp\u003e\u003cspan style=\"color:#666666;font-family:Roboto, sans-serif;font-size:14px;background-color:#ffffff;\"\u003eInduttanza di carico anodico con nucleo amorfo 100H 25mA\u003c\/span\u003e\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628980289921,"sku":null,"price":335.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/28051.jpg?v=1777985937"},{"product_id":"lundahl-ll1668nc-choke","title":"Lundahl LL1668NC- Choke 100H \/ 25mA - nucleo nanocristallino","description":"\u003cp\u003e\u003cspan style=\"color:#666666;font-family:Roboto, sans-serif;font-size:14px;background-color:#ffffff;\"\u003eInduttanza di carico anodico con nucleo a C nanocristallino 100H 25mA\u003c\/span\u003e\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628980388225,"sku":null,"price":357.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/28052.jpg?v=1777985949"},{"product_id":"lundahl-ll1694am-choke","title":"Lundahl LL1694AM - Choke multipla 0.16H\/1.5A o 0.04H\/3A - nucleo amorfo","description":"\u003cp\u003e\u003cspan style=\"font-family:Roboto, sans-serif;font-size:14px;background-color:#ffffff;\"\u003eInduttanza ad alta corrente con nucleo amorfo per alimentazione filamenti valvole. da 0.16H\/1.5A o 0.04H\/3A. VEDERE il datasheet e SCRIVERE la variante desiderata nel campo dell'ordine relativo ai commenti\u003c\/span\u003e\u003c\/p\u003e","brand":"Lundahl","offers":[{"title":"Default Title","offer_id":55628984058241,"sku":null,"price":306.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/28064.jpg?v=1777986046"},{"product_id":"lundahl-ll2733am-choke","title":"Lundahl LL2733AM - Choke multipla 0.4H\/1.7A o 0.1H\/3.4A - nucleo amorfo","description":"\u003cp\u003e\u003cspan style=\"font-family:Roboto, sans-serif;font-size:14px;background-color:#ffffff;\"\u003eInduttanza ad alta corrente con nucleo amorfo per alimentazione filamenti valvole 0.4H\/1.7A o 0.1H\/3.4A. 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