ST L293d IC Push-Pull Four Channel Driver with Diodes 2SC5858 NPN Silicon BJT and a reset button

and a reset button

relays are used to perform switching operations  without manual touch

Because the sensor circuitry is enclosed

Resistance Value 200k ohm Color Code Red

Type  Laser Diode  Model No

ST L293d IC Push-Pull Four Channel Driver with Diodes 2SC5858 NPN Silicon BJT and a reset buttonThe ST L293d is a four channel push pull driver with diodes. This device is a four channel monolithic integrated high voltage, high current driver that accepts standard DTL or TTL logic levels and drives inductive loads (such as relays, solenoids, DC, and stepping motors) and switching power transistors. Each pair of channels has an enable input to facilitate use as two bridges. The logic has a separate supply input that allows it to operate at a