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Transformers & Chokes

Filter Choke - Hammond, Enclosed, .05 H, 2000 mA
Specifications Rating: 20 Henries, 100 mA Max. VDC: 600 Resistance: 181 ohms Mounting centers: 2" x 2.1875" vertical mount Weight: 3.3 lbs. Enclosed, 4-hole mounted chokes. Tolerance of 15% on both inductance & resistance. Inductances measured at rated D.C. current. Minimum 8" long leads. Units will exhibit less inductance at slightly higher currents or more at lower currents. Perfect for high voltage power supply filtering; case matches Hammond power transformers & tube audio output transformers.
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$38.46
Filter Choke - Hammond, Open Bracket, 60 mH, 2 A
Specifications Rating: 60 mH, 2 A Max. VDC: 500 Resistance: 0.7 ohms Mounting centers: 3.56 u-frame Weight: 3.56 lbs. Economical "open bracket" - channel mount. Tolerance of 15% on both inductance & resistance. Inductances measured at rated D.C. current. Minimum 5" long leads. Units will exhibit less inductance at slightly higher currents or more at lower currents. Perfect for high voltage power supply filtering. Economical "open bracket" - channel mount. Tolerance of 15% on both inductance & resistance. Inductances measured at rated D.C. current. Minimum 5" long leads.
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$26.90
RF Choke - 25 mH, Hammond
Impregnated with a moisture and fungus resistant varnish. 1-1/2 long axial leads. Wound for low distributed capacity by using 3-Pi windings. Inductance: 25 mH5% tolerance Q (min): 102 Test Frequency (KHz): 79 Self Resonant Min. Frequency (MHz): 0.33 Maximum DC current resistance (Ohms): 127 Maximum DC current (mA): 65 Coil diameter (in): .531 Core Length (in): .875 Core Material: Ferrite
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$5.25
Audio Choke - One Electron PRC-3, 225H for Preamp Output
The PRC-3 audio choke from One Electron was designed as a plate load for the output of either a high quality line amplifier or a phono preamp. Since the plate can swing up to double the B+ value, a high output voltage can be attained with relatively low B+ values. Since the tube is presented with essentially an infinite load resistance at audio frequencies, the maximum gain is obtained and the tube is run in its most linear mode. The sonic improvement over a conventional resistor load is substantial.
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$69.95
On Backorder
Choke - 0.17 - 250, Heavy Duty Hash Choke
Molded powdered iron core. 1-1/4 long axial leads. High inductance & high current. L measured at 1 Khz. Inductance: 250 µH20% tolerance DC resistance ohms: .17 Self Resonant Frequency (MHz): 1.5 Maximum DC current amps: 2.5 Coil diameter (in): .43 Core Length (in): 1.25
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$1.75
Filter Choke - Hammond, Open Bracket, 9 H, 40 mA
Specifications Rating: 9 Henries, 40 mA Max. VDC: 300 Resistance: 700 ohms Mounting centers: 1.75 u-frame Weight: 0.2 lbs. Economical "open bracket" - channel mount. Tolerance of 15% on both inductance & resistance. Inductances measured at rated D.C. current. Minimum 5" long leads. Units will exhibit less inductance at slightly higher currents or more at lower currents. Perfect for high voltage power supply filtering.
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$12.90
Filter Choke - Hammond, Open Bracket, 2 H, 100 mA
Specifications Rating: 2 Henries, 100 mA Max. VDC: 300 Resistance: 175 ohms Mounting centers: 1.75 u-frame Weight: 0.3 lbs. Economical "open bracket" - channel mount. Tolerance of 15% on both inductance & resistance. Inductances measured at rated D.C. current. Minimum 5" long leads. Units will exhibit less inductance at slightly higher currents or more at lower currents. Perfect for high voltage power supply filtering.
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$12.25
On Backorder
RF Choke - 2.5 mH, Hammond
Impregnated with a moisture and fungus resistant varnish. 1-1/2 long axial leads. Wound for low distributed capacity by using 3-Pi windings. Inductance: 2.5 mH5% tolerance Q (min): 106 Test Frequency (KHz): 250 Self Resonant Min. Frequency (MHz): 1.3 Maximum DC current resistance (Ohms): 9 Maximum DC current (mA): 160 Coil diameter (in): .469 Core Length (in): .875 Core Material: Ferrite
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$4.50