How to Design a Phototransistor Circuit for Specific Output …
2011年5月12日 · The circuit typically consists of a phototransistor, biasing resistors, and a load resistor. How do I choose the appropriate phototransistor for my circuit? There are several factors to consider when selecting a phototransistor, including the wavelength of light to be detected, sensitivity, response time, and maximum current and voltage ratings.
How Do I Calculate the Correct Resistance for a Phototransistor …
2009年8月28日 · When designing a phototransistor circuit, it is important to consider factors such as the desired sensitivity and response time of the circuit, the type and intensity of light to be detected, the power source and voltage requirements, and any external noise or interference that may affect the circuit's performance.
How to Calculate Resistance Values for a Phototransistor Circuit?
2015年2月14日 · 5. How can I design a phototransistor circuit? Designing a phototransistor circuit involves selecting the appropriate components, such as the phototransistor, resistors, and capacitors, and connecting them in a specific configuration. It is important to consider the desired sensitivity, response time, and power requirements when designing a ...
Can the BPX81 PhotoTransistor Circuit be Modified to ... - Physics …
2009年10月1日 · Hello forum i would like to ask about this circuit ( in attachment ) if it's possible to make it.I need to have on IC1.1 a 3.3V , or you have another good... Insights Blog -- Browse All Articles -- Physics Articles Physics Tutorials Physics Guides Physics FAQ Math Articles Math Tutorials Math Guides Math FAQ Education Articles Education Guides ...
Calculate collector current of phototransistor - Physics Forums
2017年2月11日 · I have an IR Led that is 13.6 cm away from the phototransistor and has a radiant intensity of between 65 mw/sr and 125 mw/sr. The phototransistor that I'm using is SFH 3015 FA. It's photocurrent could range anywhere from 160 uA to 800 uA at an irradiance of 0.1 mW/cm^2 and VCE=5V. The phototransistor also has a radiant sensitive area of 0.4 mm^2.
Light Dependent Resistor vs. Phototransistor - Physics Forums
2006年10月20日 · A Phototransistor is a type of transistor that is activated by light. It is a light-sensitive device that is used to detect light and convert it into an electrical signal. When light falls on a phototransistor, it causes a change in the amount of current flowing through it. What is the main difference between an LDR and a phototransistor?
Phototransistor vs photodiode - Physics Forums
2007年8月2日 · This is because the amplifying function of the phototransistor allows it to produce a larger output signal in a shorter amount of time. However, the response time of both devices can also depend on other factors such as the circuit design and the amount of light being detected. What are the main applications of phototransistors and photodiodes?
Phototransistor Circuit for Motor Control - Physics Forums
2010年7月18日 · FAQ: Phototransistor Circuit for Motor Control What is an infrared phototransistor? An infrared phototransistor is an electronic device that converts infrared light into an electrical signal. It is similar to a regular phototransistor, but it is specifically designed to detect infrared light. How does an infrared phototransistor work?
Using a L14F1 IR phototransistor in a switch - Physics Forums
2010年1月12日 · Yes, the L14F1 IR phototransistor can be used in both digital and analog circuits. In a digital circuit, the phototransistor will act as a binary switch, either fully conducting or not conducting at all. In an analog circuit, the phototransistor can be used to detect varying levels of infrared light and produce a corresponding analog output. 3.
What is the output of this UJT relaxation oscillator circuit?
2012年6月30日 · Oh, sorry Vout = Vp - Veb. Homework Help. Engineering and Comp Sci Homework Help