This is a simple 220V Lamp flasher circuit.
Parts list:
Triac BT136
Diac DB3
Diode 1N4007
Capacitor 47uF 50V
Resistor 100K 2W
Resistor 1.5K
Circuit:
Video:
Sunday, September 17, 2023
Monday, September 11, 2023
LED Driver using RM9003
Constant Current LED Driver With Single IC RM9003 (6V to 600V)
English datasheet: https://iranmls.com/wp-content/uploads/2021/10/RM9003A-Datasheet.pdf
Sunday, September 10, 2023
Automatic Dark switch / photocell
This circuit is an Automatic Dark switch or photocell using a solar panel.
It can switch ON the light bulb at night and turns it OFF at day time automatically.
You have to connect it across the garden switch.
NOTE: The solar panel here used just to activate the relay, not to produce the high voltage for the light bulb, you need an external 110/220V source (grid power).
Parts list:
Solar panel 6V 1.1W
Relay 5V
Diode 1N4007
Circuit:
Video:
Using Distance sensor without microcontroller
This is how to use infrared distance sensor Sharp 2Y0A21 without using microcontroller !
Parts list:
Sharp 2Y0A21
LED bar
IC LM3915
Capacitor 220uF
Capacitor 100nF
Resistor 10K (4pcs)
Resistor 390
Battery holder
Circuit:
Saturday, September 9, 2023
Electronic distance meter without microcontroller
This circuit is an ultrasonic distance meter without using microcontroller.
Distance range for this circuit is between 2cm up to 450cm ,
However i get the best accuracy at distance less than 300cm.
You can order the PCB from here:
Parts list:
Ultrasonic module HC-SR04
IC 40110 (3pcs)
IC NE555 (2pcs)
IC 7805
Seven segment common cathode (3pcs)
Resistor 1K (22pcs)
Resistor 2K
Resistor 3K (2pcs)
Resistor 20K
Resistor 33K
Resistor 100K
Capacitor 680uF
Capacitor 100uF
Capacitor 100nF (2pcs)
Capacitor 220pF
Transistor 2N2222
Multiturn potentiometer 200K
IC Socket 16DIL (3pcs)
IC Socket 8DIL (2pcs)
Battery 9V
Holder for 9V battery
Dip switch 1p
Circuit:
For better resolution you can download the circuit as a PDF file from here:
https://drive.google.com/file/d/12MKksudA8kyZsG782npDamxVtN9INbnZ/view?usp=sharing
Video:
Saturday, June 24, 2023
Resistance meter without microcontroller
This is an educational circuit to measure resistance (ohm meter) without using any microcontroller.
It can measure resistance from 10K up to 9.9M.
You can order this PCB from PCBWay:
Parts list:
IC 40110 (7pcs)
IC 4017
IC 4013
IC LM358
LED
IC 7805 (With heatsink)
Transistor 2N2222 (2pcs)
Mosfet IRFZ44N
7segment display (7pcs)
Crystal 4 MHz
Capacitor 100nF (3pcs)
Capacitor 100uF (2pcs)
Capacitor 1uF 400v CBB
Capacitor 220pF (2pcs)
Resistor 470 ohm (50pcs)
Resistor 6.8K
Resistor 10K
Resistor 20K
Resistor 1K
Resistor 2M
Resistor 120K
Resistor 5.6K
Resistor 3.3K
Resistor 150 ohm
Resistor 100K
Resistor 680K
Push tactile Switch 6 pins
IC Socket 8pins
IC Socket 14pins
IC Socket 16pins (8pcs)
ZIF Socket 14pins
Circuit:
You can download this circuit with higher resolution as PDF file from here:
https://drive.google.com/file/d/1t-9Xey-s2JFWnAIgs_u6tn-R1tBjlrR2/view?usp=sharing
Video:
Monday, August 22, 2022
Online UPS with Capacitors
This circuit is a short running time online UPS that used high voltage capacitors to stores energy, instead of battery !
It can be used in different cases :
1-Connecting two (or more) gasoline generator together in parallel to increase the output power.
2-High voltage solar inverter without transformer
3-Online UPS with short running time
Parts List:
EGS002 SPWM Board (With display)
Mosfets 25N50 (4pcs)
Heatsink 10cmx10cm + Insulation pad for mosfets
Resistor 10 ohm (4pcs)
Resistor 10K (5pcs)
Resistor 68K (4pcs)
Resistor 200K
Resistor 1K
Resistor 150K (2pcs)
Resistor 0.1 ohm 2W
Resistor 50 ohm 50W
Potentiometer multiturn 10K
NTC 10K
Capacitor 100nF (2pcs)
Capacitor 1uF
Capacitor 1000uF 16v
CBB Capacitor 2.2uF 630V
CBB Capacitor 1uF 400V (2pcs)
CBB Capacitor 100nF 400V (2pcs)
Electrolytic Capacitor 6000uF 350V or 400V (4pcs)
Inductor 2mH (ferrite ring with diameter of 30mm and about 200 turns of 0.7 mm copper wire)
Diode 1N4148 (4pcs)
Diode 1N4007 (4pcs)
Bridge diode GBJ3510
12V Relay
Transistor 2N2222 (2pcs)
JFET 2SK170
12V 3W power supply
Cooling Fan 12V
Voltage regulator LM7805
Mains output Connectors Socket
Mains Input Connectors
10A 250V AC Fuse with holder (2pcs)
ON/OFF Switch 16A 250V
MOV (Varistor) 14D431K (2pcs)
Audio transformer 600 ohm 1:1
LED 5mm (2pcs)
Circuit Diagram:
For better resolution circuit you can download this circuit as PDF file from here:
https://drive.google.com/file/d/1MpCMolHz525S07W1W1XjGRK3-dz_rwvF/view?usp=sharing
Here is the datasheet of EGS002 Driver board: https://pdf1.alldatasheet.com/datasheet-pdf/view/1132081/EGMICRO/EGS002.html
3D Screw Insulator Cap :
https://www.tinkercad.com/things/8ag4EqVvyaO-screw-cap-insulator
You can order this PCB from PCBWay.com:
https://www.pcbway.com/project/shareproject/Online_UPS_with_Capacitors_14e23965.html
Video:
