A simple electronic latching switch
Up to 12V 6A, LED indicator on board or external (you can choose with a solder jumper). On press : on. On press again : off. A little bit of delay between two contact is necessary (0.5s maybe)
Designed with KiCad.
Tool: Eeschema 6.0.2+dfsg-1. Component Count:17.
| Ref | Qnty | Value | Cmp name | Footprint | Description | Vendor |
|---|---|---|---|---|---|---|
| C1 | 1 | 2.2uF25V | C_Polarized | Capacitor_SMD:CP_Elec_4x5.4 | Polarized capacitor | |
| C2, C3 | 2 | 0.1uf | C | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | Unpolarized capacitor | |
| D1 | 1 | 1N4007 | 1N4007 | Diode_SMD:D_SMA | 1000V 1A General Purpose Rectifier Diode | DO-41 |
| D2 | 1 | D_Schottky | D_Schottky | Diode_THT:D_DO-27_P12.70mm_Horizontal | Schottky diode | |
| D3 | 1 | LED | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | Light emitting diode | |
| J1 | 1 | Conn_01x08_Male | Conn_01x08_Male | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | Generic connector | single row |
| JP1 | 11 | SolderJumper_2_Open | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | Solder Jumper | 2-pole |
| Q1 | 1 | BC557 | BC557 | Package_TO_SOT_THT:TO-92_Inline | 0.1A Ic | 45V Vce |
| Q2 | 1 | BUZ11 | BUZ11 | Package_TO_SOT_THT:TO-220F-3_Horizontal_TabDown | 30A Id | 50V Vds |
| R1 | 1 | 220K | R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | Resistor | |
| R2 | 1 | 330K | R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | Resistor | |
| R3, R4, R5, | 3 | 10K | R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | Resistor | |
| R6 | 1 | 330 | R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | Resistor | |
| U1 | 1 | LM78M05_TO252 | LM78M05_TO252 | Package_TO_SOT_SMD:TO-252-2 | Positive 500mA 35V Linear Regulator | Fixed Output 5V |
