73
EUROPE
Basingstoke, UK 01256 812812
AUSTRALIA
Queenstown, Australia 61-8-8240-2244
CANADA
Guelph, Ontario (519) 822-2960
St. Laurent, Quebec (514) 343-9010
USA
Cheektowaga, NY (716) 630-7030
©
www.hammondmfg.com
P.C. Board Mount (148-149 Series)
P.C. BOARD MOUNT
AUDIO TRANSFORMERS
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. •
Bilar 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. •
Net weight: 0.6 oz. (148 Series) & 1.0 oz. (149 Series).•
NOTES:
*1) For output transformers the current gure 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 gure shown is with the windings connected in series).
Part
No.
Application
Nominal Impedance
Pri D.C.
(*1) ma.
D.C. Resistance +/- 15% (*2)
Output
Milliwatts
Dwg.
Figure
Primary Secondary
Primary Secondary
148A Input 150/600 600/2400 1.9 45 300 300 1
148B Input 150 400/1600 3.8 11.3 200 300 2
148C Input 50000 250/1000 0 1760 25.4 12 2
148D Input 200K 1000 0 1760 6.2 3 3
148E Driver 500 125/500 18 79 60 75 2
148F Driver 1500 125/500 11.6 220 58 75 2
148H Driver 3000 250/1000 7.5 480 107 75 2
148K Driver 4000 500/2000 6.5 540 230 75 2
148M Driver 6000 500/2000 5.3 850 230 75 2
148Q Driver 10000 500/2000 4.1 1700 238 75 2
148R Driver 20000 250/1000 2.4 2230 123 50 2
148T Output 500 C.T. 3.2 2.1 41 0.34 300 4
148V Output 600 C.T. 150 C.T. 1.9 45 14 300 5
148X Output 4000 C.T. 3.2 0.8 380 0.34 300 4
148Y Output 5000 C.T. 500 C.T. 0.7 410 52 300 5
149C Driver 160 20/80 56 24 6.5 200 2
149E Driver 300 30/120 42 41 9.7 200 2
149F Driver 450 40/160 33 52 19 200 2
149G Driver 600 150/600 29 92 58 200 2
149H Driver 1000 60/240 22 155 24 200 2
149Q Output 200 C.T. 3.2 7 19 0.4 1000 4
149S Output 600 C.T. 150 C.T. 4 53 17 1000 5
149T Output 600 C.T. 600 C.T. 4 53 70 1000 5
149U Output 150/600 8 4 53 95 1000 6
149V Hybrid 600 C.T. 300/1200 4 53 63 1000 7
148 Series
149 Series
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
74
EUROPE
Basingstoke, UK 01256 812812
AUSTRALIA
Queenstown, Australia 61-8-8240-2244
CANADA
Guelph, Ontario (519) 822-2960
St. Laurent, Quebec (514) 343-9010
USA
Cheektowaga, NY (716) 630-7030
©
www.hammondmfg.com
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 prole, open type construction •
Frequency response 200 Hz. - 15 Khz. (+/- 2 db, ref. @ 1 Khz.) •
Net weight 0.6 oz.•
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.
Nominal Impedance
Max. Pri.
D.C. ma
D.C. Resistance
Output
Milliwatts
Primary Secondary
Primary Secondary
141B 200K 1000 0 3775 85 4
141D 3000 C.T. 1000 C.T. 1 120 51 150
141F 25K 50 2 1645 65 100
141H 600 C.T. 600 C.T. 2 32 45 150
141M 30K 1200 C.T. 2 1100 47 100
141P 1200 C.T. 8 2 50 0.45 150
Part
No.
Application
Nominal Impedance Overall Turns Ratio
Primary Secondary Pri. to Sec.
140A Voice Coil to Single Grid 4 60000 1:122
140B Dyn. MIC. to Single Grid 30 60000 1:45
140C MIC. to Single Grid 50 60000 1:34.5
140H Bridging Line to P.P. Grids 10000 40000 C.T. 1:2
140K MIC. to Single Grid 150 60000 1:2
140M CRYS, MIC. to Base 100K 1500 8:1
140N Dyn. MIC to Base 50 1500 1:5.5
140P Line to Base 150/600 600/2400 1:2
140Q Line to Line 600 C.T. 600 C.T. 1:1
