#8 thread on top bottom. SHENZHEN, China, Dec. 3, 2018 /PRNewswire-iReach/ -- HVC Capacitor announced they have launched special custom product range as replacement of Murata's high voltage ceramic capacitors in … Two of these tubes run 3kW without cooling and the associated blower noise. 3 Cornell Dubilier Beaver BR 250-25 250MFD 25WVDC 85c Capacitors. Offered by us Soviet electronic surplus is from this times. GU81M - $50, socket - $40. ... 18uf Capacitor In Industrial Capacitors, Doorknob Capacitor, Ceramic Industrial Capacitors, 20uf Capacitor, Atc Capacitor, K15Y-1 3.5kV 15pF 4kVar ceramic HV doorknob capacitor - $ 1.20 /ea K15Y-1 15kV 470pF 40kVar ceramic HV doorknob capacitor - $ 6.00 /ea K15-5 6.3kV 4700pF ceramic HV disc capacitor - $ 0.80 /ea The early CRT's did not have Aquadag coating on them, just plain uncoated glass. PAIR (2X) .022 630v VINTAGE RUSSIAN K73-22 TONE CAPACITORS - NOS 0.022. They were in a parts bin and had obviously been used. If you do not remember your password, enter the e-mail address you used to register, it will be sent a new password, you will be able to change it at your next log-in. NPO Rated Doorknob Capacitors - Centralab (CRL) type 855. Dimensions: Φ40mm×14.3mm. Try Ebay, where by far most of the parts you'll find are Russian, or rfparts.com. Sign up for newsletter. For variable capacitors, if you don't want to find some old K15-4 1000pF 30kV High Voltage Doorknob Capacitors USSR NOS . Is there any reason why I can't just use a surplus RF doorknob type capacitor? Box size is 32x10x25cm(HxWxD). CRL 857 200pf 7.5Kv DOORKNOB Capacitor Electronic Parts Electronic Components Electronic Components We will be closed on Friday, January 1st, 2021..Happy New Year! Sometimes the decision to tackle a project or not can boil down to sourcing parts. Sussex Surplus. Many in stock ready to ship. We took at his homebrew TEA lasers recently, which rely on a high voltage supply and very rapid switching to get nitrogen gas to lase. This listing is for Qty. But have finally decided that they are surplus to my needs. Many European surplus doorknob capacitors are Russian made. Shenzhen, China – 26th NOV, 2019 – High Voltage Ceramic Capacitor Screw Terminal Type, also called “High Voltage Doorknob Capacitor”, is an industry grade electronic component. Temp Coef. Ebays Global Shipping Program will be used. High Voltage Capacitor 1000pF@15kV made from Ceramic dielectric in Doorknob shape with epoxy resin encapsulated. It was Big Russian QRO (10MW CW) also the received signals was extremely weak. If you are located outside of the Continental USA. Terminals: M5×Φ12mm w/2 Bolts and 2 Washersmm 60pF 7.5KVDC, Doorknob Transmitting Capacitor Special Price $14.98 Regular Price $24.50 As low as $12.98 READY TO SHIP - ONLY 48 LEFT IN STOCK! They are very expensive, so I was thinking of putting 2x 10KV, 1nF ceramic disk type caps in series, which is much cheaper. These are new old stock parts! or Best Offer. I found these American-made capacitors about 30 years ago when I was cleaning out a scientific laboratory. Click a antenna picture for info. 281M: 280pF, 20 KV: 0.8" x 0.8" 252Z: 2500pF, 30 KV: 1.24" x 2.04" 272K: The Cyrillic letter. Typically a 300-2000 pf mica capacitor we called a "doorknob" capacitor. For fixed capacitors, a surplus source of "doorknob capacitors" is the standard way. Capacitor 6mfd-8000vdcw (High Voltage, Oil Filled, NO PCB) $352.18. пФ. We manufacture high voltage ceramic capacitors,ceramic disc capacitors,doorknob capacitors,Safety Capacitor(Y capacitor) professionally in China.And we are the only manufacturer of ceramic disc capacitors that accepted by international client who before using … Surplus Parts & Equipment. These capacitors are very cheap when bought in bulk so the financial risk is negligible. I probably need to replace a 16KV, 470pF doorknob type capacitor. Dimensions: Φ40mm×14.3mm. These capacitors came from an electronic company that went out of business. I n high voltage ceramic capacitors application field, requiring a small, high voltage and high frequency characteristics. Email: orders@vintage-electronics.co.uk кВ. C $5.49 + shipping. When these capacitors failed, it could result in an interesting display of arcing & sparking. His design uses surplus doorknob caps, big chunky parts rated for very high voltages but also with very low parasitic inductance, which makes them perfect for the triggering circuit. : N5600; Clean pull out, tested $9.00 shipping. CERAMIC DOORKNOB CAPACITORS - Please email sales@rfjunk.com if you have any problems ordering. Free Shipping is for Continental USA bidders ONLY! I built a copy of this amazing antenna out of aluminum tubes, sheet metal, wires, hose clamps, miscellaneous hardware, and some surplus doorknob capacitors I bought from eBay. MFR Part #: TS50-401-5752. RF pot capacitors … Phone # 205-572-6922 Manufactured by Erie & muRata. TWO VINTAGE CAPACITORS. HVCO - 60PF/7.5KVDC - Capacitor, Ceramic. $12.95. The storage capacitors C1 are corn- posed of4O doorknob ceramic capacitors of 1 .7 nF, having a total capacitance of 68.0 nF. If it doesn't work out, well, it may be back to hunting for surplus mica and ceramic doorknob capacitors. Capacitance rated at 5 pf, + or - 1 pf with a Voltage Rating of 5 kv. There are no markings on these capacitor's but we found one marked 571Z-750-40k and the digi-bridge measures 750 pF on these capacitors. kblessed . Quality new & used scientific equipment, in-stock & ready to ship 570010-15P: $728.00. Doorknob Capacitor, 400pf 7.5kv 20%. 580400-7P Doorknob Capacitor, 400pf 7.5kv 10%, MFR: High Energy (Clean Used) Only 2 left. capacitors. High Voltage Doorknob Caps Ideal for RF coupling & bypass and HV power supplies. Phone # 205-572-6922 What are the Advantages of a High Voltage Doorknob Ceramic Capacitor? ... KB Surplus Sales. 750pf 40Kv Ceramic doorknob Capacitor. TDK's ultra high voltage ceramic capacitors have over 40 years of development and sales history. Picofarad in the Cyrillic alphabet is de-noted as. The capacitors that nearly everyone else seems to be using (metal film polypropylene snubbers) are expensive. Suppliers: Pot capacitors. n. of nano, but in reality it is a “pe” of pico. ... 250W HF Amplifier Kit with 3xGU50 Includes box,sockets,new tubes, band switch,2 air var capacitors,meter, RF connectors and other parts - easy to begin and complete. Building lasers is a great example of this, and [Les Wright] recently looked at substitutes for hard-to-find “doorknob” capacitors for his transversely excited atmospheric lasers. п. may appear to Westerners as a Latin. Tel: 01243 602633 Mobile: 07833 763476. HT57/HH57/857 Series RF Doorknob Caps 15 KVDC Rating 1.187" Diameter x 1.89" Long • 10-32 Thread: RF Parts Number Factory Part # pF TC Current/Amps 1 MHz 10 MHz 30 MHz; 15 KVDC Rating P=CLEAN PULLOUT. 99.9%. With the progress of materials, electrodes and manufacturing technology, great progress has been made in the development of high voltage ceramic capacitors, and has been widely used. Not cheap or available at the corner store but they are available. type:capacitor - capacitor type:high voltage - mpn:715c-z - brand:sprague - category:capacitors electronic components > item:sprague 715C-Z doorknob CAPACITORS - Please email sales@rfjunk.com if you have any problems ordering. Also, does anyone know what frequency I should be targeting specifically for heating aluminum? Vintage Suflex Polystyrene Capacitor 2 Pieces 2n7 (2.7nF 2700pF) 160V 2.5% Tol They are stored with us still sealed in original packaging and are absolutely 'as new'. vacuum variable capacitors doorknob ceramic capacitors Power capacitors,vacuum tubes & parts Home. Not everything is as close as a Digi-Key or Mouser order, and relying on the availability of surplus parts from eBay… TS50-401-20-5752 Doorknob Capacitor, 400pf 7.5kv 20%. or Best Offer. Ceramic doorknob capacitor, 10 pF, 3.5 kV Radio Komponent K15Y-1-10. $100. The well-known brands are American company Vishay, AVX, HVCA and Japanese player Murata and TDK. 6 watching. These "doorknob" capacitors are still in use in transmitters and industrial equipment. Kilo-volt in Cyrillic is written as. TWO (2) HUGE GE High Voltage OIL CAPACITOR 230uF 7000V Power Supply Filter HAM. An X-ray preionised self sustained discharge HF/DF laser It was made up of a combination of 50 kV rated ceramic doorknob capacitors arranged in series and parallel. Capacitors / Ceramic Doorknob / High Voltage / Misc; High Voltage / Misc. I kept them thinking that I might have some eventual use for them. Part Number Value Size (W x Dia.) Visit Store: KB Surplus Sales. 0.1 uFd, 600 VDC, 10% EM, USED. Almost gone . 1-1/8" diameter x 1-5/8" high. The total cost of the project was less than one fifth of the cost of a factory-made … We'll see how they do in practice, first with 200 watts and later with 1000 watts. The Homestead, Golf Links Lane, Selsey, West Sussex, PO20 9DP. Originally supplied to a large UK based 'Milspec ' type Co. these came to us as part of a lot of surplus stock, having been in storage for some years (they are dated early 80's) we have therefore classified them as 'new other'. 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