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Astable mutlivibrator circuit.

11 months ago 155
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Change R3=R4 and C1=C2 to vary LED1/LED2 blinking frequency. LED3 has a strobe effect by PC817.


Astable multivibrator circuit

Auto blinker

LED Blinker v2.0

Auto_blinker v2.0


ID Name Designator Footprint Quantity BOM_Supplier BOM_Manufacturer BOM_Manufacturer Part BOM_Supplier Part
1 10uF C1,C2 CAP-D4.0XF1.5 2 LCSC ValuePro 10uF 25V 4*7 C43351
2 GREEN LED1,LED2,LED3 LED-5MM-2.54MM 3 LCSC KENTO 5AG2HT01 200-300 C54166
3 2N2222 Q1,Q2 TO-92(TO-92-3) 2 LCSC SEMTECH 2N2222 C118536
4 Vcc +9V H1 210S-1X2P 1 LCSC Ckmtw 210S-1*2P L=11.6MMGold-plated black C124375
5 470Ω R1,R2 AXIAL-0.3 2 LCSC UniOhm MFR0W8F4700A50 C61674
6 47KΩ R3,R4 AXIAL-0.3 2 LCSC UniOhm MFR0W8F4702A50 C58677
7 PC817X1NSZ9F U1 DIP-4 1 LCSC Sharp Microelectronics PC817X1NSZ9F C115207
8 5.6k R5 AXIAL-0.3 1 LCSC FlyWin - C337052
9 1K R6 AXIAL-0.3 1 LCSC UniOhm MFR0W8F1001A50 C58674
10 470uF C3 CAP-D6.3XF2.5 1 LCSC ValuePro 470uF 16V 6.3*12 C43809




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