solar tracker system using lm358
#solar tracker
#LM358
#light sensor
#photovoltaic
#renewable energy
#op-amp
#sun tracking
#solar panel
#energy efficiency
#automatic control
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Bidirectional Compound Op Amp
Using two transistors (Q1 and Q2), a bidirectional operational amplifier can source or sink up to 50 mA. Diodes D1 and D2 provide biasing for Q1 to eliminate "dead-zone" effects.
The described circuit utilizes two transistors, Q1 and Q2, configured to...
More op-amp circuits
The circuits examined thus far rely on linear feedback for their operation. The magnitude of the signal returned to the negative input is always strictly proportional to the output voltage. Consequently, within the limits defined by the operational amplifier (op-amp),...
Light Pollution Meter
My circuit adds a transistor, to add feedback, and two resistors, to tailor the range of the control, with the result that a single-turn potentiometer gives a control range of about 2 to 30 microamps. I installed my circuit in...
Voltage regulator for solar panel
This voltage regulator for devices that utilize solar cells is straightforward and requires only a few electronic components. When a rechargeable energy storage device is employed, the voltage regulator circuit facilitates charging when the output voltage of the cell is...
The...
Sine-Wave/Square-Wave Converter
An operational amplifier (op amp) configured as a comparator generates a 10-V peak-to-peak square wave output with a 100-mV input signal, operating up to 15 kHz. Adjust resistor R5 to achieve symmetry in the square wave at low input levels.
The...
Solar panel circuit
A printed circuit board (PCB) was presented along with a schematic detailing the arrangement of components required for the activation of an LED on the board. The purpose of the PCB is to facilitate planning for the eventual construction of...
Light Sensor Circuits
Dark Activated Switch or Porch Light Switch. This circuit activates a relay when the light level drops below a preset threshold. The light sensitivity can be adjusted using variable resistor VR1, and the relay contacts can control an external light...
Amplifying DC Diode Detector Output
The small DC voltages at the output of the diode detector are challenging to amplify accurately due to DC offsets introduced by any operational amplifier (op-amp) and low-frequency noise (1/f noise). A solution to these issues is to chop the...
Positive Pulse Pulse Stretcher
A simple pulse stretcher built with two sections of an operational amplifier uses a voltage follower U1A to drive D1 and C2. C2 charges to the peak value of the pulse voltage. Resistors R3 and R4 determine the discharge time...