Showing posts with label schematics. Show all posts
Showing posts with label schematics. Show all posts
Monday, September 15, 2014
High Voltage regulator schematics
Friday, September 5, 2014
Digital thermometer schematics
This digital thermometer circuit diagram uses a common 1N4148 diode as the temperature sensor. The temperature coefficient of the diode, -2 mV / 0C is exploited for this application to create an accurate electronic thermometer. To display the measured temperature, a digital multimeter is used and so we can measure temperature values from -9.990C up to +99.90C.
Calibration of the digital thermometer
To set the minimum level (00C), place the diode in a glass of water filled with crushed ice (check the temperature first with a normal thermometer) wait until the thermometer shows zero degrees centigrade. Set P1 so that the digital voltmeter will display 000 when the diode senses zero degree centigade.
To set the maximum level (1000C), place the diode sensor into a boiling water and adjust P2 so that the digital meter exactly displays 99.9.
source [link]
Friday, August 29, 2014
Basic Analog Flip Flop Schematics
This schematics is a basic analog flip flop. As we know, there are analog flip flop which built using analog components like ordinary transistor and digital flip flop build using digital logic IC (integrated schema) like TTL IC.
and here the result:
To control the speed of lights "on" and "off" in another word "control the flash rate", you can replace the Resistor 10K with variable resistor 20K or replace the electrolytic capacitor 100uF with other value.
Flip flop PCB layout:
Read More..
and here the result:
To control the speed of lights "on" and "off" in another word "control the flash rate", you can replace the Resistor 10K with variable resistor 20K or replace the electrolytic capacitor 100uF with other value.
Flip flop PCB layout:
Subscribe to:
Posts (Atom)
