infrared sample circuit: switch via BUZ11 MOSFET to be able to increase current without exceeding arduino's 20mA limit

sample-circuits/infrared.sch

@@ -27,60 +27,90 @@ $EndComp
 $Comp
 L LED:TSAL4400 D?
 U 1 1 5FE9F625
-P 5250 2550
-F 0 "D?" H 5200 2840 50  0001 C CNN
-F 1 "TSAL6200" H 5200 2749 50  0000 C CNN
-F 2 "" H 5250 2725 50  0001 C CNN
-F 3 "https://www.vishay.com/docs/81010/tsal6200.pdf" H 5200 2550 50  0001 C CNN
-	1    5250 2550
+P 5350 1550
+F 0 "D?" H 5300 1840 50  0001 C CNN
+F 1 "TSAL6200" H 5300 1749 50  0000 C CNN
+F 2 "" H 5350 1725 50  0001 C CNN
+F 3 "https://www.vishay.com/docs/81010/tsal6200.pdf" H 5300 1550 50  0001 C CNN
+	1    5350 1550
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:R R?
 U 1 1 5FEA0953
-P 5700 2550
-F 0 "R?" H 5770 2596 50  0001 L CNN
-F 1 "330Ω" V 5585 2550 50  0000 C CNN
-F 2 "" V 5630 2550 50  0001 C CNN
-F 3 "~" H 5700 2550 50  0001 C CNN
-	1    5700 2550
+P 5800 1550
+F 0 "R?" H 5870 1596 50  0001 L CNN
+F 1 "330Ω" V 5685 1550 50  0000 C CNN
+F 2 "" V 5730 1550 50  0001 C CNN
+F 3 "~" H 5800 1550 50  0001 C CNN
+	1    5800 1550
 	0    1    1    0   
 $EndComp
 $Comp
 L Device:R R?
 U 1 1 5FEA0DDA
-P 5700 2800
-F 0 "R?" H 5770 2846 50  0001 L CNN
-F 1 "920Ω" V 5585 2800 50  0000 C CNN
-F 2 "" V 5630 2800 50  0001 C CNN
-F 3 "~" H 5700 2800 50  0001 C CNN
-	1    5700 2800
+P 5800 1800
+F 0 "R?" H 5870 1846 50  0001 L CNN
+F 1 "920Ω" V 5685 1800 50  0000 C CNN
+F 2 "" V 5730 1800 50  0001 C CNN
+F 3 "~" H 5800 1800 50  0001 C CNN
+	1    5800 1800
 	0    1    1    0   
 $EndComp
 Wire Wire Line
-	5850 2550 5950 2550
+	5950 1550 6050 1550
 Wire Wire Line
-	5950 2550 5950 2800
+	6050 1550 6050 1800
 Wire Wire Line
-	5950 2800 5850 2800
-Connection ~ 5950 2550
+	6050 1800 5950 1800
 Wire Wire Line
-	5950 2550 6100 2550
+	5650 1800 5550 1800
 Wire Wire Line
-	5550 2800 5450 2800
+	5550 1550 5650 1550
 Wire Wire Line
-	5450 2550 5550 2550
+	5550 1550 5550 1800
 Wire Wire Line
-	5450 2550 5450 2800
+	5450 1550 5550 1550
+Connection ~ 5550 1550
 Wire Wire Line
-	5350 2550 5450 2550
-Connection ~ 5450 2550
+	5150 1550 5050 1550
 Wire Wire Line
-	5050 2550 4950 2550
+	6700 3950 6700 3850
+$Comp
+L Transistor_FET:BUZ11 Q?
+U 1 1 5FEA0605
+P 5150 2550
+F 0 "Q?" H 5355 2596 50  0001 L CNN
+F 1 "BUZ11" H 5355 2550 50  0000 L CNN
+F 2 "Package_TO_SOT_THT:TO-220-3_Vertical" H 5400 2475 50  0001 L CIN
+F 3 "http://www.fairchildsemi.com/ds/BU/BUZ11.pdf" H 5150 2550 50  0001 L CNN
+	1    5150 2550
+	-1   0    0    -1  
+$EndComp
+Wire Wire Line
+	6800 1750 6800 1550
+$Comp
+L Device:R R?
+U 1 1 5FEADCC4
+P 5650 2550
+F 0 "R?" H 5720 2596 50  0001 L CNN
+F 1 "10kΩ" V 5535 2550 50  0000 C CNN
+F 2 "" V 5580 2550 50  0001 C CNN
+F 3 "~" H 5650 2550 50  0001 C CNN
+	1    5650 2550
+	0    1    1    0   
+$EndComp
 Wire Wire Line
-	4950 2550 4950 3950
+	6100 2550 5800 2550
 Wire Wire Line
-	4950 3950 6700 3950
+	6050 1550 6800 1550
+Connection ~ 6050 1550
 Wire Wire Line
-	6700 3950 6700 3850
+	5050 1550 5050 2350
+Wire Wire Line
+	5350 2550 5500 2550
+Wire Wire Line
+	5050 2750 5050 3950
+Wire Wire Line
+	5050 3950 6700 3950
 $EndSCHEMATC