Version 4 SHEET 1 1124 680 WIRE -192 -144 -272 -144 WIRE -80 -144 -128 -144 WIRE 304 -128 160 -128 WIRE -560 -96 -560 -176 WIRE -480 -96 -480 -176 WIRE 160 -96 160 -128 WIRE 160 -96 96 -96 WIRE 208 -96 160 -96 WIRE 96 -32 96 -96 WIRE 208 -32 208 -96 WIRE 304 -32 304 -48 WIRE -560 -16 -560 -96 WIRE -480 -16 -480 -96 WIRE -272 -16 -272 -144 WIRE -208 -16 -272 -16 WIRE -80 -16 -80 -144 WIRE -80 -16 -128 -16 WIRE -80 0 -80 -16 WIRE -560 64 -560 -16 WIRE -480 64 -480 -16 WIRE 208 64 208 48 WIRE 272 64 208 64 WIRE 208 96 208 64 WIRE 464 96 384 96 WIRE 560 96 464 96 WIRE 592 96 560 96 WIRE 704 96 672 96 WIRE 800 96 784 96 WIRE -560 144 -560 64 WIRE -560 144 -656 144 WIRE -480 144 -480 64 WIRE -400 144 -480 144 WIRE -272 144 -272 -16 WIRE -272 144 -400 144 WIRE -208 144 -208 64 WIRE -208 144 -272 144 WIRE -144 144 -144 64 WIRE -80 144 -80 64 WIRE -80 144 -144 144 WIRE -32 144 -80 144 WIRE 96 144 96 48 WIRE 96 144 32 144 WIRE 144 144 96 144 WIRE 560 144 560 96 WIRE 800 144 800 96 WIRE -656 176 -656 144 WIRE -400 176 -400 144 WIRE -272 176 -272 144 WIRE -80 176 -80 144 WIRE 336 176 336 64 WIRE 384 176 384 160 WIRE 384 176 336 176 WIRE 464 176 464 160 WIRE 512 176 464 176 WIRE 96 208 96 144 WIRE 208 208 208 192 WIRE 384 208 384 176 WIRE 464 208 464 176 WIRE 512 208 512 176 WIRE 464 272 384 272 WIRE 560 272 560 208 WIRE 560 272 464 272 WIRE 800 272 800 224 WIRE 800 272 560 272 WIRE -656 288 -656 256 WIRE -400 288 -400 240 WIRE -400 288 -656 288 WIRE -272 288 -272 256 WIRE -272 288 -400 288 WIRE -80 288 -80 256 WIRE -80 288 -272 288 WIRE 96 288 -80 288 WIRE 208 288 96 288 WIRE 208 336 208 288 FLAG 208 336 0 FLAG 304 -32 0 FLAG 512 208 0 SYMBOL npn 144 96 R0 SYMATTR InstName Q1 SYMATTR Value 2N2222 SYMBOL res 80 192 R0 SYMATTR InstName R1 SYMATTR Value 25000 SYMBOL res 80 -48 R0 SYMATTR InstName R2 SYMATTR Value 100000 SYMBOL res 192 192 R0 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL res 192 -48 R0 SYMATTR InstName R4 SYMATTR Value 2200 SYMBOL voltage 304 -144 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR InstName V2 SYMATTR Value 4.8 SYMATTR SpiceLine Rser=1 SYMBOL voltage -656 160 R0 WINDOW 3 -64 158 Left 0 WINDOW 123 -64 186 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value PULSE(0 5 0 20n 20n 3.205u 6.41u) SYMATTR Value2 AC 2.5 SYMBOL cap 32 128 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C2 SYMATTR Value 0.01µ SYMBOL res -464 -192 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R5 SYMATTR Value 680 SYMBOL res -464 -112 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R6 SYMATTR Value 680 SYMBOL res -464 -32 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R7 SYMATTR Value 680 SYMBOL res -464 48 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R8 SYMATTR Value 680 SYMBOL res -464 128 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R9 SYMATTR Value 680 SYMBOL res -112 -32 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R10 SYMATTR Value 1meg SYMBOL res -256 272 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R11 SYMATTR Value 10 SYMBOL res -64 272 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R12 SYMATTR Value 10 SYMBOL cap -416 176 R0 SYMATTR InstName C1 SYMATTR Value .047µ SYMBOL diode -144 128 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D1 SYMATTR Value MURS120 SYMBOL diode -208 80 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D2 SYMATTR Value MURS120 SYMBOL cap -96 0 R0 SYMATTR InstName C3 SYMATTR Value 0.47µ SYMATTR SpiceLine V=400 SYMBOL cap -128 -160 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C4 SYMATTR Value 100µ SYMATTR SpiceLine Rser=.75 SYMBOL cap 336 48 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C5 SYMATTR Value 0.01µ SYMBOL diode 400 160 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL diode 400 272 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D4 SYMATTR Value 1N4148 SYMBOL diode 480 160 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D5 SYMATTR Value 1N4148 SYMBOL diode 480 272 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D6 SYMATTR Value 1N4148 SYMBOL cap 544 144 R0 SYMATTR InstName C6 SYMATTR Value 0.1µ SYMBOL res 688 80 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R13 SYMATTR Value 4k7 SYMBOL res 800 80 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R14 SYMATTR Value 4k3 SYMBOL res 816 240 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R15 SYMATTR Value 200 TEXT 40 -224 Left 0 !.tran 0 .001 0 100u startup TEXT -248 -200 Left 0 ;Test Capacitor TEXT 824 184 Left 0 ;meter internal resistance TEXT 776 64 Left 0 ;Zero Adjust Pot (0-25k) TEXT 376 392 Left 0 ;Meter Rectifier TEXT 104 392 Left 0 ;Amplifier TEXT -224 392 Left 0 ;Bridge TEXT -592 392 Left 0 ;Low Pass Filter TEXT -704 464 Left 0 ;VE7IT Capacitor ESR Test Meter TEXT -336 464 Left 0 ;see http://members.shaw.ca/swstuff TEXT -808 392 Left 0 ;156khz cmos osc TEXT 824 152 Left 0 ;50uA Full Scale TEXT 720 -248 Left 0 ;Typical Meter Calibration TEXT 768 -216 Left 0 ;C4 ESR Meter uA TEXT 816 -184 Left 0 ;0 -50 TEXT 808 -160 Left 0 ;0.1 -49.5 TEXT 808 -136 Left 0 ;0.5 -47.5 TEXT 808 -112 Left 0 ;1.0 -45.2 TEXT 808 -88 Left 0 ;2.0 -41.8 TEXT 808 -64 Left 0 ;5.0 -29.9 TEXT 808 -40 Left 0 ;10 -17 TEXT 808 -16 Left 0 ;20 -4.8 TEXT 808 8 Left 0 ;50 -.3