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P.C. Board Mount (148-149 Series)
148 Series
P.C. BOARD MOUNT AUDIO TRANSFORMERS
149 Series * Pin type (0.25" length & 0.025" square), P.C. board mount. * Economical, open type, horizontal bracket construction. 149 Series includes clinching lugs for extra mounting strength. * Frequency response 200 Hz. - 15 Khz. (+/- 1 db, ref. @ 1 Khz.). * Total distortion approximately 2% for drivers and 1% for outputs at 200 Hz., decreasing at higher frequencies. * Insertion loss less than 1/2 db. * Bifilar wound for balanced capacitive and resistance characteristics, on pin bobbins for standard 0.2" grid pin spacing. * Insulation test 250V RMS. * For rugged epoxy cast type units refer to our 102, 104, 106, or 107, 108 & 109 series. 1 5 * Net weight: 0.6 oz. (148 Series) & 1.0 oz. (149 Series).
2 3 4 PRI
Figure 1
Audio
6 7 8
1 2
5 7 8
Part No. 148A 148B 148C 148D 148E 148F 148H 148K 148M 148Q 148R 148T 148V 148X 148Y 149C 149E 149F 149G 149H 149Q 149S 149T 149U 149V
Application Input Input Input Input Driver Driver Driver Driver Driver Driver Driver Output Output Output Output Driver Driver Driver Driver Driver Output Output Output Output Hybrid
Nominal Impedance Primary 150/600 150 50000 200K 500 1500 3000 4000 6000 10000 20000 500 C.T. 600 C.T. 4000 C.T. 5000 C.T. 160 300 450 600 1000 200 C.T. 600 C.T. 600 C.T. 150/600 600 C.T. Secondary 600/2400 400/1600 250/1000 1000 125/500 125/500 250/1000 500/2000 500/2000 500/2000 250/1000 3.2 150 C.T. 3.2 500 C.T. 20/80 30/120 40/160 150/600 60/240 3.2 150 C.T. 600 C.T. 8 300/1200
Pri D.C. (*1) ma. 1.9 3.8 0 0 18 11.6 7.5 6.5 5.3 4.1 2.4 2.1 1.9 0.8 0.7 56 42 33 29 22 7 4 4 4 4
D.C. Resistance +/- 15% (*2) Primary 45 11.3 1760 1760 79 220 480 540 850 1700 2230 41 45 380 410 24 41 52 92 155 19 53 53 53 53 Secondary 300 200 25.4 6.2 60 58 107 230 230 238 123 0.34 14 0.34 52 6.5 9.7 19 58 24 0.4 17 70 95 63
Output Dwg. Milliwatts Figure 300 300 12 3 75 75 75 75 75 75 50 300 300 300 300 200 200 200 200 200 1000 1000 1000 1000 1000 1 2 2 3 2 2 2 2 2 2 2 4 5 4 5 2 2 2 2 2 4 5 5 6 7
4
SEC
PRI SEC Figure 5
5 1 4 6 7 8 PRI SEC Figure 2 1 4 5 8
1 2 3 4 PRI SEC Figure 6 5 8
1 3 4
5 6 7 8
PRI SEC Figure 3 1 2 4 5 8
NOTES: *1) For output transformers the current figure is for maximum unbalanced current *2) D.C. resistance shown is for the total primary or secondary windings (ie: if unit contains multiple primary or secondary windings the figure shown is with the windings connected in series).
PRI SEC Figure 7
PRI SEC Figure 4
Basingstoke, UK 01256 812812 Queenstown, Australia 61-8-8240-2244
EUROPE
www.hammondmfg.com
AUSTRALIA
Guelph, Ontario (519) 822-2960 St. Laurent, Quebec (514) 343-9010 Cheektowaga, NY (716) 630-7030
CANADA USA
73
(c)
P.C. Board & Chassis Mount (140-141 Series)
LOW PROFILE - P.C. BOARD MOUNT AUDIO TRANSFORMERS
* * * * Pin type (0.25" length & 0.035" diameter), P.C. board mount Low profile, open type construction Frequency response 200 Hz. - 15 Khz. (+/- 2 db, ref. @ 1 Khz.) Net weight 0.6 oz.
1 2 3 PRI SEC
6 5 4
Part No. 141B 141D 141F 141H 141M 141P
Nominal Impedance Primary 200K 3000 C.T. 25K 600 C.T. 30K 1200 C.T. Secondary 1000 1000 C.T. 50 600 C.T. 1200 C.T. 8
Max. Pri. D.C. ma 0 1 2 2 2 2
D.C. Resistance Primary 3775 120 1645 32 1100 50 Secondary 85 51 65 45 47 0.45
Output Milliwatts 4 150 100 150 100 150
Audio
CHASSIS MOUNT - SHIELDED AUDIO TRANSFORMERS
* Insulated leads 5" long minimum * Stamped steel case (Diameter of 1.25" and height of 1") for excellent shielding - low hum pick-up. * Frequency response 70 Hz. - 11 Khz. (+/- 1 db, ref. @ 1 Khz.) * Case hole mounting centers are 1.6" * Net weight 2 oz.
Part No. 140A 140B 140C 140H 140K 140M 140N 140P 140Q
Application Voice Coil to Single Grid Dyn. MIC. to Single Grid MIC. to Single Grid Bridging Line to P.P. Grids MIC. to Single Grid CRYS, MIC. to Base Dyn. MIC to Base Line to Base Line to Line
Nominal Impedance Primary Secondary 4 60000 30 60000 50 60000 10000 40000 C.T. 150 60000 100K 1500 50 1500 150/600 600/2400 600 C.T. 600 C.T.
Overall Turns Ratio Pri. to Sec. 1:122 1:45 1:34.5 1:2 1:2 8:1 1:5.5 1:2 1:1
Guelph, Ontario (519) 822-2960 St. Laurent, Quebec (514) 343-9010 (c) Cheektowaga, NY (716) 630-7030
CANADA USA
www.hammondmfg.com
Basingstoke, UK 01256 812812 Queenstown, Australia 61-8-8240-2244
EUROPE
74
AUSTRALIA

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