The Hammond 193S is a D.C. filter choke from the 193 Series of enclosed and potted chassis mount chokes, rated 1.0 henries at 1000 mA DC. It is designed for high voltage power supply filtering, and is a natural fit for tube amplifier builders, audio equipment restorers and OEM engineers designing linear DC supplies.
The 193S is a 1.0 henry choke rated for 1000 mA (1 A) DC, with 5.75 ohms resistance and a 1000 VDC maximum operating voltage, in the enclosed X13 case.
The 193S is an enclosed, 4-hole chassis mount choke using the X13 mounting style: Dimension A 3.75 in, B 4.00 in, C 4.56 in, D 3.00 in and E 2.81 in, with .203 x .38 in mounting slots. The unit is vacuum impregnated with polyurethane varnish for quiet, long-life operation, has minimum 8 in long leads, and its case matches power transformers and tube audio output transformers.
Electrically, the 193S has a resistance of 5.75 ohms and a maximum operating voltage of 1000 VDC. Inductance is measured at rated D.C. current, with a tolerance of 15% on both inductance and resistance; the unit will exhibit less inductance at slightly higher currents and more at lower currents. Insulation class is 105C and the operating temperature range is -40C to 65C. The part is RoHS and REACH compliant.
The series table lists a weight of 8 lbs, and the shipping weight is 8 lbs (3.63 kg).
| Mounting Type | Enclosed, 4-hole chassis mount |
| Mounting Slot (G) | .203 x .38 in |
| Mounting Style (Dimension Ref.) | X13 |
| Style | Enclosed |
| Series | 193 Series (Enclosed & Potted Chassis Mount) |
| Product Type | D.C. Filter Choke |
| Long Description | DC Filter Choke, Enclosed chassis mount, inductance 1.0H @ 1000mA, 193 Series |
| Short Description | CHOKE 1H @ 1A DC |
| Dimension A | 3.75 in |
| Dimension B | 4.00 in |
| Dimension C | 4.56 in |
| Dimension D | 3.00 in |
| Dimension E | 2.81 in |
| Tolerance | 15% on both inductance and resistance |
| Inductance | 1.0H |
| Resistance | 5.75 Ohms |
| D.C. Current | 1000 mA |
| Insulation Class | 105C |
| Inductance Measurement | Measured at rated D.C. current |
| Maximum Operating Voltage | 1000 VDC |
| UPC | 623980260006 |
| UNSPSC | 39121301 |
| Part Number | 193S |
| Shipping Weight | 8 lbs (3.63 kg) |
| Weight (Series Table) | 8 lbs |
| Lead Length | Minimum 8 in |
| Impregnation | Vacuum impregnated with polyurethane varnish |
| Operating Temperature Range | -40C to 65C |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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The 193S is rated 1.0H at 1000 mA DC, with inductance measured at rated D.C. current and a 15% tolerance on inductance and resistance.
1000 VDC maximum operating voltage.
It is an enclosed, 4-hole chassis mount choke in the X13 mounting style with .203 x .38 in mounting slots.
Inductance is specified at rated D.C. current; units exhibit less inductance at slightly higher currents or more at lower currents. The manufacturer notes that proper henry testing requires an LCR meter in junction with a 25A power supply that allows DC bias and a higher applied AC drive voltage.
Insulation class is 105C and the operating temperature range is -40C to 65C.
For more sizes and voltages in an open, bracket mount type, the manufacturer points to its 153-159 Series.
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