UV Sensitive Photodetector
A UV sensitive photodetector can be realized by using a Siemens
BPW34B with a standard transimpedance amplifier. The enclosed
schematic shows two different circuits. The circuit on the left is
a basic design which can be used for detecting a slowly changing
source. Because it is sensitive down to DC, it will also amplify
any dark current from the PIN diode as well as ambient light.
The circuit on the right will detect pulsed light sources and
will reject errors caused by dark current or stray light
leakage.