Mon premier blog

Photodiode Amplifiers by Jerald Graeme

Photodiode Amplifiers Jerald Graeme ebook
Format: djvu
Page: 259
Publisher: McGraw-Hill Professional
ISBN: 007024247X, 9780070242470

Mathieu's colleagues intend to use these devices to amplify the measured light intensity difference between two photodiodes (both receiving less than nanosecond-long pulses). For optical bench applications, Laser Components GmbH has introduced the P-CUBE photodiode modules, which deliver precise measurement technology in a an InGaAs PIN photodiode (800 to 2200 nm). The photocurrent is obtained using a BNC connector. Light photons impinging upon a semiconductor material in the vicinity of a P-N junction release conduction carriers to produce current flow through the photodiode effect. A photodiode amplified by a built-in transistor is called a phototransistor. The 12V "pull-up" on the photodiode obviously works as a very slow potential "equalizer" for the op-amp input -- when light is applied on the photodiode, the voltage slowly increases and vice versa. In our search for the right components, we found a super small integrated circuit that has an on-board photodiode and op amp circuit combined. The programmable iAMP-700 current amplifier is directly connected to the P-CUBE with a BNC connector. The P-CUBE also is available with an optical FC connector. I'm working on a 6- chaannel photodiode amplifier, which will be used for site surveys for a new telescope coming up in India. You can connect a standalone photodiode to the input of a standalone transistor. The below schematic is the first photo-diode amplifier stage which is based around the MAX4477 low-noise dual opamp and will be latter amplified using a high speed comparator and then coincidence circuit.