EESchema Schematic File Version 2 LIBS:power LIBS:device LIBS:transistors LIBS:conn LIBS:linear LIBS:regul LIBS:74xx LIBS:cmos4000 LIBS:adc-dac LIBS:memory LIBS:xilinx LIBS:microcontrollers LIBS:dsp LIBS:microchip LIBS:analog_switches LIBS:motorola LIBS:texas LIBS:intel LIBS:audio LIBS:interface LIBS:digital-audio LIBS:philips LIBS:display LIBS:cypress LIBS:siliconi LIBS:opto LIBS:atmel LIBS:contrib LIBS:valves LIBS:DonB LIBS:BalloonRadio-cache EELAYER 25 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 2 4 Title "NavSpark MicroAPRS balloon radio" Date "" Rev "" Comp "" Comment1 "Donald Bindner" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L ACT2103 U3 U 1 1 5562BFB0 P 3950 3200 F 0 "U3" H 3950 3500 60 0000 C CNN F 1 "ACT2103" H 3950 2850 60 0000 C CNN F 2 "DonB:SOP-8EP" H 3850 3000 60 0001 C CNN F 3 "" H 3850 3000 60 0000 C CNN 1 3950 3200 1 0 0 -1 $EndComp $Comp L C C3 U 1 1 5562BFCD P 2500 3250 F 0 "C3" H 2500 3350 40 0000 L CNN F 1 "10nF" H 2506 3165 40 0000 L CNN F 2 "DonB:C_0805_HandSoldering" H 2538 3100 30 0001 C CNN F 3 "" H 2500 3250 60 0000 C CNN 1 2500 3250 -1 0 0 1 $EndComp NoConn ~ 4400 3150 $Comp L INDUCTOR L1 U 1 1 5562BFD9 P 3650 3850 F 0 "L1" V 3600 3850 40 0000 C CNN F 1 "12uH" V 3750 3850 40 0000 C CNN F 2 "DonB:SRR1260" H 3650 3850 60 0001 C CNN F 3 "" H 3650 3850 60 0000 C CNN 1 3650 3850 0 1 1 0 $EndComp $Comp L R R1 U 1 1 5562BFE3 P 5000 3550 F 0 "R1" V 5080 3550 40 0000 C CNN F 1 "24K" V 5007 3551 40 0000 C CNN F 2 "DonB:R_0805_HandSoldering" V 4930 3550 30 0001 C CNN F 3 "" H 5000 3550 30 0000 C CNN 1 5000 3550 0 1 1 0 $EndComp $Comp L R R2 U 1 1 5562BFEB P 5250 3350 F 0 "R2" V 5330 3350 40 0000 C CNN F 1 "10K" V 5257 3351 40 0000 C CNN F 2 "DonB:R_0805_HandSoldering" V 5180 3350 30 0001 C CNN F 3 "" H 5250 3350 30 0000 C CNN 1 5250 3350 0 1 1 0 $EndComp $Comp L C C2 U 1 1 5562BFFB P 4750 3050 F 0 "C2" H 4750 3150 40 0000 L CNN F 1 "2.2nF" H 4756 2965 40 0000 L CNN F 2 "DonB:C_0805_HandSoldering" H 4788 2900 30 0001 C CNN F 3 "" H 4750 3050 60 0000 C CNN 1 4750 3050 0 -1 -1 0 $EndComp $Comp L R R3 U 1 1 5562C002 P 5250 3050 F 0 "R3" V 5330 3050 40 0000 C CNN F 1 "8.2K" V 5257 3051 40 0000 C CNN F 2 "DonB:R_0805_HandSoldering" V 5180 3050 30 0001 C CNN F 3 "" H 5250 3050 30 0000 C CNN 1 5250 3050 0 1 1 0 $EndComp $Comp L C C4 U 1 1 5562C013 P 4300 4050 F 0 "C4" H 4300 4150 40 0000 L CNN F 1 "22uF/10V" H 4306 3965 40 0000 L CNN F 2 "DonB:C_0805_HandSoldering" H 4338 3900 30 0001 C CNN F 3 "" H 4300 4050 60 0000 C CNN 1 4300 4050 -1 0 0 1 $EndComp $Comp L C C5 U 1 1 5562C01A P 4650 4050 F 0 "C5" H 4650 4150 40 0000 L CNN F 1 "22uF/10V" H 4656 3965 40 0000 L CNN F 2 "DonB:C_0805_HandSoldering" H 4688 3900 30 0001 C CNN F 3 "" H 4650 4050 60 0000 C CNN 1 4650 4050 -1 0 0 1 $EndComp Text Notes 5550 4000 0 60 ~ 0 Vout Text Notes 3400 2550 0 60 ~ 0 Vin $Comp L DIODESCH_12 D1 U 1 1 5562C02D P 3100 4100 F 0 "D1" H 3100 4200 40 0000 C CNN F 1 "SSB43" H 3100 4000 40 0000 C CNN F 2 "DonB:Diode-SMB_Handsoldering" H 3100 4100 60 0001 C CNN F 3 "" H 3100 4100 60 0000 C CNN 1 3100 4100 0 -1 -1 0 $EndComp $Comp L R R4 U 1 1 5562C0A7 P 5000 3700 F 0 "R4" V 5080 3700 40 0000 C CNN F 1 "1.8K" V 5007 3701 40 0000 C CNN F 2 "DonB:R_0805_HandSoldering" V 4930 3700 30 0001 C CNN F 3 "" H 5000 3700 30 0000 C CNN 1 5000 3700 0 1 1 0 $EndComp Text Notes 2500 3200 0 40 ~ 0 /50V Text Notes 3200 2950 1 40 ~ 0 /50V Text Notes 2950 2450 1 40 ~ 0 /50V $Comp L C C1 U 1 1 5562BFB7 P 3000 2750 F 0 "C1" H 2900 2850 40 0000 L CNN F 1 "10uF" H 2800 2650 40 0000 L CNN F 2 "Capacitors_SMD:C_1206_HandSoldering" H 3038 2600 30 0001 C CNN F 3 "" H 3000 2750 60 0000 C CNN 1 3000 2750 0 -1 -1 0 $EndComp $Comp L CP C6 U 1 1 5562C06B P 3000 2500 F 0 "C6" H 2850 2600 40 0000 L CNN F 1 "47uF" H 2800 2350 40 0000 L CNN F 2 "Capacitors_ThroughHole:C_Radial_D8_L11.5_P3.5" H 3038 2350 30 0001 C CNN F 3 "" H 3000 2500 60 0000 C CNN 1 3000 2500 0 1 1 0 $EndComp $Comp L GND #PWR025 U 1 1 5562F1BB P 2700 2750 F 0 "#PWR025" H 2700 2500 50 0001 C CNN F 1 "GND" H 2600 2600 50 0000 C CNN F 2 "" H 2700 2750 60 0000 C CNN F 3 "" H 2700 2750 60 0000 C CNN 1 2700 2750 1 0 0 -1 $EndComp $Comp L GND #PWR026 U 1 1 5562FAEA P 3500 3450 F 0 "#PWR026" H 3500 3200 50 0001 C CNN F 1 "GND" H 3600 3300 50 0000 C CNN F 2 "" H 3500 3450 60 0000 C CNN F 3 "" H 3500 3450 60 0000 C CNN 1 3500 3450 1 0 0 -1 $EndComp $Comp L GND #PWR027 U 1 1 5562FC12 P 3100 4350 F 0 "#PWR027" H 3100 4100 50 0001 C CNN F 1 "GND" H 3200 4200 50 0000 C CNN F 2 "" H 3100 4350 60 0000 C CNN F 3 "" H 3100 4350 60 0000 C CNN 1 3100 4350 1 0 0 -1 $EndComp $Comp L GND #PWR028 U 1 1 5562FF0C P 4400 4350 F 0 "#PWR028" H 4400 4100 50 0001 C CNN F 1 "GND" H 4500 4200 50 0000 C CNN F 2 "" H 4400 4350 60 0000 C CNN F 3 "" H 4400 4350 60 0000 C CNN 1 4400 4350 1 0 0 -1 $EndComp $Comp L GND #PWR029 U 1 1 55630705 P 5600 3450 F 0 "#PWR029" H 5600 3200 50 0001 C CNN F 1 "GND" H 5700 3300 50 0000 C CNN F 2 "" H 5600 3450 60 0000 C CNN F 3 "" H 5600 3450 60 0000 C CNN 1 5600 3450 1 0 0 -1 $EndComp $Comp L GND #PWR030 U 1 1 55630784 P 5600 3150 F 0 "#PWR030" H 5600 2900 50 0001 C CNN F 1 "GND" H 5700 3000 50 0000 C CNN F 2 "" H 5600 3150 60 0000 C CNN F 3 "" H 5600 3150 60 0000 C CNN 1 5600 3150 1 0 0 -1 $EndComp $Comp L +BATT #PWR031 U 1 1 556314D7 P 3350 2450 F 0 "#PWR031" H 3350 2300 50 0001 C CNN F 1 "+BATT" V 3350 2700 50 0000 C CNN F 2 "" H 3350 2450 60 0000 C CNN F 3 "" H 3350 2450 60 0000 C CNN 1 3350 2450 1 0 0 -1 $EndComp $Comp L +3.3VP #PWR032 U 1 1 5563481C P 5800 3850 F 0 "#PWR032" H 5950 3800 50 0001 C CNN F 1 "+3.3VP" H 5800 3950 50 0000 C CNN F 2 "" H 5800 3850 60 0000 C CNN F 3 "" H 5800 3850 60 0000 C CNN 1 5800 3850 0 1 1 0 $EndComp Text Notes 4250 2300 0 100 ~ 0 3.3V supply $Comp L +BATT #PWR033 U 1 1 5569D9F3 P 4200 1300 F 0 "#PWR033" H 4200 1150 50 0001 C CNN F 1 "+BATT" V 4200 1550 50 0000 C CNN F 2 "" H 4200 1300 60 0000 C CNN F 3 "" H 4200 1300 60 0000 C CNN 1 4200 1300 1 0 0 -1 $EndComp $Comp L GND #PWR034 U 1 1 5569DA18 P 4700 1300 F 0 "#PWR034" H 4700 1050 50 0001 C CNN F 1 "GND" H 4600 1150 50 0000 C CNN F 2 "" H 4700 1300 60 0000 C CNN F 3 "" H 4700 1300 60 0000 C CNN 1 4700 1300 1 0 0 -1 $EndComp $Comp L TESTPAD P11 U 1 1 5569DA9A P 4200 1300 F 0 "P11" H 4200 1200 60 0000 C CNN F 1 "Batt" H 4150 1400 60 0000 C CNN F 2 "DonB:1pin" H 4200 1300 60 0001 C CNN F 3 "" H 4200 1300 60 0000 C CNN 1 4200 1300 0 1 1 0 $EndComp $Comp L TESTPAD P12 U 1 1 5569DB5B P 4700 1300 F 0 "P12" H 4700 1150 60 0000 C CNN F 1 "GND" H 4750 1400 60 0000 C CNN F 2 "DonB:1pin" H 4700 1300 60 0001 C CNN F 3 "" H 4700 1300 60 0000 C CNN 1 4700 1300 0 -1 -1 0 $EndComp Text Notes 4050 850 0 50 ~ 0 Battery: 5.5 - 10 volts $Comp L DIODESCH_12 D4 U 1 1 5569FF33 P 6150 1250 F 0 "D4" H 6150 1350 40 0000 C CNN F 1 "SSB43" H 6050 1150 40 0000 C CNN F 2 "DonB:Diode-SMB_Handsoldering" H 6150 1250 60 0001 C CNN F 3 "" H 6150 1250 60 0000 C CNN 1 6150 1250 -1 0 0 1 $EndComp Wire Wire Line 3100 4350 3100 4300 Wire Wire Line 3100 3900 3100 3850 Wire Wire Line 4550 3050 4600 3050 Wire Wire Line 5400 3350 5600 3350 Wire Wire Line 5400 3050 5600 3050 Wire Wire Line 4300 3900 4300 3850 Wire Wire Line 4650 3900 4650 3850 Wire Wire Line 4650 4250 4650 4200 Wire Wire Line 4300 4250 4300 4200 Wire Wire Line 2500 3400 2500 3450 Wire Wire Line 2500 3100 2500 3050 Wire Wire Line 2800 2500 2850 2500 Connection ~ 4850 3850 Wire Wire Line 4850 3700 4850 3850 Wire Wire Line 5150 3700 5150 3550 Wire Wire Line 4850 3550 4850 3350 Connection ~ 2800 2750 Wire Wire Line 2800 2750 2800 2500 Connection ~ 3350 2500 Wire Wire Line 3150 2500 3350 2500 Connection ~ 4050 3850 Connection ~ 2500 3050 Connection ~ 3350 2750 Wire Wire Line 3150 2750 3350 2750 Connection ~ 4650 3850 Connection ~ 4300 3850 Connection ~ 3100 3850 Wire Wire Line 3350 2450 3350 3150 Connection ~ 4400 4250 Wire Wire Line 4400 4250 4400 4350 Wire Wire Line 4300 4250 4650 4250 Wire Wire Line 5600 3050 5600 3150 Wire Wire Line 4900 3050 5100 3050 Wire Wire Line 4550 3250 4550 3050 Wire Wire Line 4400 3250 4550 3250 Wire Wire Line 5600 3350 5600 3450 Connection ~ 4850 3350 Wire Wire Line 4400 3350 5100 3350 Wire Wire Line 3950 3850 5800 3850 Connection ~ 2850 3450 Wire Wire Line 2850 3850 3350 3850 Wire Wire Line 2850 3450 2850 3850 Wire Wire Line 3200 3250 3500 3250 Wire Wire Line 3200 3450 3200 3250 Wire Wire Line 2500 3450 3200 3450 Wire Wire Line 2500 3050 3500 3050 Wire Wire Line 2700 2750 2850 2750 Wire Wire Line 3500 3350 3500 3450 Wire Wire Line 3350 3150 3500 3150 $Comp L +BATT #PWR035 U 1 1 556A0C76 P 5950 1250 F 0 "#PWR035" H 5950 1100 50 0001 C CNN F 1 "+BATT" V 5950 1500 50 0000 C CNN F 2 "" H 5950 1250 60 0000 C CNN F 3 "" H 5950 1250 60 0000 C CNN 1 5950 1250 1 0 0 -1 $EndComp $Comp L GND #PWR036 U 1 1 556A0CA1 P 6350 1250 F 0 "#PWR036" H 6350 1000 50 0001 C CNN F 1 "GND" H 6250 1100 50 0000 C CNN F 2 "" H 6350 1250 60 0000 C CNN F 3 "" H 6350 1250 60 0000 C CNN 1 6350 1250 1 0 0 -1 $EndComp Text Notes 5800 850 0 50 ~ 0 Reverse voltage protection\n(temporary) $EndSCHEMATC