Photodiode Amplifier for Visible Light Using OPA381 – Arduino Nano Shield

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https://www.electronics-lab.com/photodiode-amplifier-visible-light-using-opa381-arduino-nano-shield/

The project presented here is a photodiode amplifier for visible light. The output voltage of the circuit increases linearly with light intensity. Low-cost BPW34 photodiode is used as a light sensor and OPA381 op-amp as an amplifier. OPA381 is a transimpedance amplifier that converts photodiode current flow into voltage. The operating voltage of this circuit […]

BPW34 Gamma Ray Detector

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https://www.electronics-lab.com/bpw34-gamma-ray-detector/

The usual approach to radiation detection is the use of a Geiger-Müller tube and its high voltage circuit requirements, but during a quick surf through the internet today, I came across this portable and “accurate looking” solution developed by Stefan Wagner, on EasyEDA. Rather than the Geiger Muller tube and its complex circuitry, the project […]

Building a PIN Diode Geiger Counter

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https://www.electronics-lab.com/building-pin-diode-geiger-counter/

“Kai” is in the process of building a Geiger counter based on BPW34 photodiode and explains his first step for the sensor circuit. The common approach to protect the photodiodes from light is to use one layer of tin foil and connect it to ground. This should also protect the circuit against electromagnetic radiation. I’ve started with something […]