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G8MNY > TECH 27.07.05 17:42l 86 Lines 3784 Bytes #999 (0) @ WW
BID : 55820_GB7CIP
Read: GUEST OE7FMI
Subj: Odd Resistance Finder
Path: DB0FHN<DB0NOE<DB0GAP<DB0GPP<DB0LX<DB0RBS<DB0SWR<DK0WUE<SP7MGD<GB7YKS<
GB7YFS<GB7CIP
Sent: 050727/0745Z @:GB7CIP.#32.GBR.EU #:55820 [Caterham] $:55820_GB7CIP
From: G8MNY@GB7CIP.#32.GBR.EU
To : TECH@WW
By G8MNY (New Apr 05)
Here is a useful list of just some of the values obtained with two E12 range
resistors. (E12 = 1.0 1.2 1.5 1.8 2.2 2.7 3.3 3.9 4.7 5.6 6.8 8.2 Values)
Multiply or Divide by 10s for the range needed.
Wanted How Wanted How
1020 1K2//6K8 3590 5K6//10K
1031 1K5//3K3 3600 1K8+1K8
1047 1K2//8K2 3700 1K+2K7, 1K5+2K2
1071 1K2//10K 3717 6K8//8K2
1080 1K8//2K7 3900 1K2+2K7
1083 1K5//3K9 4000 1K8+2K2
1100 2K2//2K2, 1K+100 4048 6K8//10K
1137 1K5//4K7 4100 8K2//8K2
1165 1K8//3K3 4200 1K5+2K7
1182 1K5//5K6 4300 1K+3K3
1212 2K2//2K7 4400 2K2+2K2
1229 1K5//6K8 4500 1K2+3K3
1232 1K8//3K3 4505 8K2//10K
1269 1K5//8K2 4800 1K5+3K3
1301 1K8//4K7 4900 1K+3K9, 2K2+2K7
1304 1K5//10K 5000 10K//10K
1320 2K2//3K3 5100 1K2+3K9, 1K8+3K3
1350 2K7//2K7 5400 1K5+3K9, 2K7+2K7
1362 1K8//5K6 5455 10K//12K
1406 2K2//3K9 5500 2K2+3K3
1423 1K8//6K8 5700 1K+4K7, 1K8+3K9
1476 1K8//8K2 5900 1K2+4K7
1485 2K7//3K3 6000 12K//12K, 10K//15K, 2K7+3K
1497 2K2//4K7 6100 2K2+3K9
1525 1K8//10K 6200 1K5+4K7
1580 2K2//5K6 6429 10K//18K
1596 2K7//3K9 6500 1K8+4K7
1650 3K3//3K3 6600 1K+5K6, 2K7+3K9, 3K3+3K3
1662 2K2//6K8 6667 12K//15K
1715 2K7//4K7 6800 1K2+5K6
1735 2K2//8K2 6875 10K//22K
1788 3K3//3K9 6900 2K2+4K7
1803 2K2//10K 7100 1K5+5K6
1822 2K7//5K6 7200 18K//12K, 3K3+3K9
1933 2K7//6K8 7297 10K//27K
1939 3K3//4K7 7400 1K8+5K6, 2K7+4K7
1950 3K9//3K9 7500 15K//15K
2000 1K+1K 7674 10K//33K
2031 2K7//8K2 7765 12K//22K
2071 3K3//5K6 7800 1K+6K8, 2K2+5K6, 3K9+3K9
2126 2K7//10K 7959 10K//39K
2131 3K9//4K7 8000 1K2+6K8, 3K3+4K7
2200 1K+1K2 8182 15K//18K
2222 3K3//6K8 8246 10K//47K
2299 3K9//5K6 8300 1K5+6K8, 2K7+5K6
2350 4K7//4K7 8308 12K//27K
2353 3K3//8K2 8485 10K//56K
2400 2K2+2K2 8600 1K8+5K6, 3K9+4K7
2479 3K9//6K8 8718 10K//68K
2481 3K3//10K 8800 12K//33K
2500 1K+1K5 8900 3K3+5K6
2555 4K7//5K6 8913 10K//82K
2700 2K7, 1K2+1K5 8919 15K//22K
2779 4K7//6K8 9000 18K//18K, 2K2+5K6
2800 5K6//5K6, 1K+1K8 9091 10K//100K
2806 3K9//10K 9176 12K//39K
2988 4K7//8K2 9200 1K+8K2
3000 1K2+1K8, 1K5+1K5 9400 1K2+8K2, 4K7+4K7
3071 5K6//6K8 9500 2K7+6K8, 3K9+5K6
3197 4K7//10K 9559 12K//47K
3200 1K+2K2 9643 15K//27K
3300 3K3, 1K5+1K8 9700 1K5+8K2
3328 5K6//8K2 9882 12K//56K
3400 6K8//6K8, 1K2+2K2 9900 18K//22K
// = in parallel
+ = in series
Series combinations are better for high voltages.
Similar values spread the power dissipation more evenly.
So now you can replace that experimental preset value with fixed value.
Why Don't U send an interesting bul?
73 De John, G8MNY @ GB7CIP
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