The use of solar energy to charge the battery to form an uninterrupted DC voltage output is a feature of this circuit. The circuit consists of a constant current charger (IC1), an overcharge protection circuit (IC2 and T1), and a linear switching regulator (IC3).
The limiting current of the constant current charger IC1 is 60mA. Once the battery B is overcharged (such as when sufficient sunlight is irradiated or the load current is small), the battery voltage rises, and the voltage of the sliding terminal of P1 rises. The voltage controller IC2 performs control to make T1 saturate and conduct, and bypass some or all of the current to the ground through R5 and R7, and the LED1 emits light to prevent overcharge from occurring. The output voltage and current of the regulator IC3 are related to the selected model (LT1300 or LT1301) and the jumper interface S1 and S2.
As shown in the attached table, a DC voltage output of +5V (LT1300) or +12V (LT1301) is available when S1 is connected to the jumper. When S1 is not connected to the jumper, the output of +3.3V (LT1300) or +5V (LT1301) can be obtained. Similarly, the jumper or missed jumper of S2 can get the output current of 400mA or 1A.
Incremental encoders provide speed, direction and relative position feedback by generating a stream of binary pulses proportional to the rotation of a motor or driven shaft. Lander offers both optical and magnetic incremental encoders in 4 mounting options: shafted with coupling, hollow-shaft, hub-shaft or bearingless. Single channel incremental encoders can measure speed which dual channel or quadrature encoders (AB) can interpret direction based on the phase relationship between the 2 channels. Indexed quadrature encoders (ABZ) are also available for homing location are startup.
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