DIY High voltage variable capacitors


20APL300DE Variable Capacitor, 12300pf, 1200v, 49 plates, MFR OEP

The most common usage for vacuum variables are in high-powered transmitters such as those used for broadcasting, military and amateur radio, as well as high-powered RF tuning networks.


High Power Variable Tuning Capacitor Condenser 074028 MHParts Ham

Variable Tuning & Load Capacitors. The M-73 is a high-voltage, heavy-wattage, continuous duty capacitor. Insulation between rotor and stator is achieved through 1/4" thick, high quality, military spec ceramics riveted to the plated steel end plates. These end plates are tied together by solid aluminum and brass bars, forming a rigid structure.


152533 Johnson Variable Capacitor, 40450pF Dual Section, 6kv 33

GE's high voltage capacitor portfolio includes internally fused, externally fused and fuseless capacitors available in ratings of 25 to 1,100 kVAR for single-phase units, and 300 to 400 kVAR for three-phase units at 2.4 kV to 25 kV. The units can be designed to meet IEC 60871, IEEE 18 and CSA C22.2 standards. A variety of industries can.


Rotary variable capacitor Condensateur, Antenne radioamateur, Ampli hifi

Variable capacitor motor drive assembly removed from equipment. Comes with Jennings UCSL-1000 vacuum variable rated 7-1000pf at 3kv. Assembly has Gear driven motor drive mounted on aluminun plate and comes with DC Motor from Globe Industries (Part # C-25A-511). Motor spec: 27.5 volts nom., 6 amps nom., 1/100 hp at 15000 rpm min.


25500pF 3000V C500 AIR VARIABLE CAPACITOR HF TUNERS CTECH

Johanson JFD - VC27G Capacitor, Variable Trimmer. 1-25pF 200V. Trimmer, Glass. Glass Piston Variable Trimmer Capacitor Termination Style: Axial. Dimensions: 9.8mm max D x 32.3mm tall plus 5.5mm screw adjustment, with one leads as shown. Genuine Vintage JFD - Vintge Audio - New Old Stock. Note: Military NSN 5910-000279801. Learn More


High Voltage Air Variable Capacitors 22360pF/ 1KV(Dual) w/ 12P Rotary

Advertisement. Electronically-variable capacitors, whether used for T&M or in an end circuit, usually have a maximum capacitance of a few hundred picofarads, and a limited adjustment range. This Design Idea demonstrates a wide-range, variable, high-valued capacitor. Figure 1 The circuit in the dashed box illustrates the variable capacitor topology.


Dentron D140 75 High Power Variable Tuning Capacitor MHParts Ham

List of Variable Capacitors Product Specs, Datasheets, Manufacturers & Suppliers. Home. Products & Services. Engineering News. Standards. Webinars. Newsletters.. Applications: High Voltage Capacitor; High Power Capacitance Range: 1.00E-6 to 9.50E-5 View Datasheet Trimmers, Variable Capacitors -- 1608-1229-ND [NMNT23-6 from Knowles Precision.


Variable Type 500 Pf Variable Capacitor , Ceramic High Voltage Variable

Home / Alphabetical Category Listing / High Voltage Capacitors / Air Variable Capacitors Air Variable Capacitors Showing all 22 results 1G-75 $ 2.95 Single gang 5-75pf with screw driver adjust shaft. 500V or less. Overall dimensions 1 17/32" x 15/16" x 1 3/16". Unused Add to cart 456C452 $ 5.00


UCSX100010, Jennings, Variable, Vacuum, Capacitor, 251000 PF, 10kv,

Capacitor applications. Table credit: Wikipedia. Specifications Fixed vs. Variable. Capacitors can feature either fixed or variable capacitance. Fixed capacitors simply have a fixed, nonadjustable capacitance value.. Variable capacitors can be adjusted by the user, using either mechanical or electronic means. These are also known as tuning capacitors due to their common applications in radio.


High Voltage Power Capacitor 1700 VAC / 4500 VDC 118 uF Elstar

Make Your Own High-Voltage Capacitors by Anthony Charlton Electronic Hobbyists Handbook September, 1994 Page number (s): 65-71 Build capacitors that really pack a punch for high voltage fun!


DIY High Voltage Variable Capacitor YouTube

Trimmer and variable capacitors are generally used for tuning & matching applications in RF circuits. Radio receivers that indicate the selected tuning frequency by sweeping a mechanical indicator past a scale (or vice-versa) typically have a mechanical linkage between the indicator and the variable capacitor(s) used in the tuning circuit.


152222 Johnson Variable Capacitor, 35400pF, 6kv 29 plates, 0.125

Welcome to the fascinating world of «exotic» RF components! «Exotic» means «difficult to locate», because a typical electronics shop will usually not carry these high-voltage items. Below lists of suppliers are not exhaustive, but will hopefully help you find what you need. Ceramic disc capacitors ceramic disc capacitor


What Are Variable Capacitor

Description: Voltronics "NT" series of PTFE trimmers are designed for applications requiring greater capacitance and voltage ratings than the popular smaller trimmers. Available in a variety of form factors they provide high power performance, Q of 2000, in volumetrically efficient package sizes.


E. F. Johnson 1536 Hi Voltage Variable Capacitor 39496pf 3.5Kv BMI

0:00 / 18:18 Introduction DIY High Voltage Variable Capacitor AmRad Podcast 21.4K subscribers Subscribe 27K views 2 years ago Prompted by the need for a high voltage variable capacitor to tune.


Ceramic Vacuum High Voltage Variable Capacitor 30650pf 35KV Stable

Capacitors - High Voltage -Heavy Wattage Variable Capacitor -- M97 Series. Supplier: Oren Elliott Products, Inc. Description: The M97 was designed to replace vacuum variables in applications requiring large capacitances (up to 3250pF) and moderate voltages (from 800 to 4500Vrms). At 3.85" high by 3.85" wide, the M97 is more compact than the M90.


High Power Variable Tuning Capacitor Condenser 6 Inches MHParts Ham

Dan Maloney. January 6, 2024. It's not entirely clear why [Advanced Tinkering] needs a 50,000-volt power supply, but given the amount of work he put into this one, we're going to guess it will.