2019 ~ Mousa-Simple Projects

December 27, 2019

Dimmer With Touch Switch Without Arduino or any Microcontroller

December 27, 2019 Simple Projects

This circuit is a Dimmer With Touch Switch Without Arduino or any Microcontroller.

I just using two ICs (LM324 and CA3130). The output is PWM signal and its duty cycle can be adjusted by two touch pads from 0% to 100%.

Interesting thing in this circuit that the duty cycle remain the same even after turns OFF and ON the supply voltage.

You can download the Gerber file of this PCB from here:
https://www.pcbway.com/project/shareproject/Dimmer_With_Touch_Switch_Without_Arduino_or_any_Microcontroller.html

Dimmer With Touch Switch Without Arduino or any Microcontroller

Parts list:

CA3130 or CA3140

LM324

Mosfet IRFZ44n

Mosfet Heatsink

Capacitor 100nF

Capacitor 220uF

Capacitor 1uF MKH

Capacitor 47pF

Capacitor 47nF

Zener Diode 5.1V

Resistor 100K (2pcs)

Resistor 20K (2pcs)

Resistor 1.5M (2pcs)

Resistor 3K

Resistor 6.8K

Resistor 510R

Resistor 51K

Circuit:

Video:

LED Chaser Without IC By Using Transistors Only

December 18, 2019 Simple Projects

This circuit is LED Chaser Without IC By Using Transistors Only.
I explained the circuit in my YouTube video here.

Parts list:

Transistors (12pcs)
LED (22pcs)
Capacitor 220uF (2pcs)
Capacitor (680uF)
Resistor 1K (10pcs)
Resistor 2K (10pcs)
Resistor 510R (2pcs)
Resistor 5.6K (2pcs)
Resistor 10R
Resistor 20R
Resistor 33R
Resistor 47R
Resistor 51R
Resistor 68R
Resistor 75R
Resistor 91R
Resistor 100R

Resistor 120R

You can download the Gerber file of this PCB from here:
https://www.pcbway.com/project/shareproject/LED_Chaser_Without_IC_By_Using_Transistors_Only.html

Circuit:

Video:

Cockroft Walton voltage multiplier / Bug Zapper

December 12, 2019 Simple Projects

This circuit is a Cockroft Walton voltage multiplier with 3 stages that convert the 220V RMS to 1860 Volt .

It could be used for Bug / Fly Zapper or even for Ozone generator.

You can download the Gerber file of this PCB from here:

https://www.pcbway.com/project/shareproject/1850V_Cockroft_Walton_Voltage_Multiplier___Bug_Zapper_Circuit.html

Parts list:

470nF 630V Capacitor (6pcs)
1N4007 Diode (7pcs)
LED
Resistor 51K 1/2W (2pcs)
Terminal 2pin

Circuit:

Circuit simulation using Multisim show us the voltage across each capacitor will be 620v DC

and since they are connected in series the total voltage will be 1860V.

So we need capacitors with voltage rating at least 630V.

Video:

Random number generator with LEDs / Roulette

October 24, 2019 Simple Projects

This circuit is a Random number generator with 10 LEDs (Roulette) for picking random number between 1 and 10.

You can download the Gerber file of this PCB from here:

https://www.pcbway.com/project/shareproject/Random_Number_Generator_Circuit_With_10_LEDs__Roulette_.html

Random number generator with LEDs / Roulette

Parts list:

IC 4017

IC 555

LEDs (10pcs)

Buzzer

Transistor BC557

Capacitor 0.47uF

Capacitor 100nF

Resistor 1K

Resistor 3.9M (2pcs)

Resistor 15K

Resistor 510R

Circuit:

Video:

Photocell dark switch with 2 wires

October 17, 2019 Simple Projects

This circuit is a 110/220V AC Photocell switch (Dark activated switch) with 2 wires, it turns ON the lamps at the night and turns them OFF at the day time automatically.

The standby state power consumption in this circuit is very low, about 0.05W only,

But the commercial photocell consume about 1.6W in the standby state. (32 times more)

The circuit working with both 110V & 220V AC and the Max. load can be 4A (LED, CFL & incandescent lamps).

You can download the Gerber file of this PCB from here:

https://www.pcbway.com/project/shareproject/220V_Dark_activated_switch__Photocell_.html

Parts list:

IC 4093

SCR C106M

Bridge diode 8A

Resistor 30K

Resistor 1M

LDR

Zener diode 10V

Circuit:

If your lamp flickering you can add a 100nF ceramic capacitor between pin 7 and pin 14 of the IC, but don't use electrolytic capacitor because it has high leakage current.
The IC used in this circuit is a micro power IC with schmitt trigger ,
You can't use other NAND or NOT gate IC because they aren't Micro power.
The SCR also should be high sensitive gate SCR (C106M).
The sensitivity of the circuit can be adjusted by changing the 30K resistor to other value.
This circuit deals with mains voltage so it can be dangerous.

Video:

Automatic changeover Circuit

October 09, 2019 Simple Projects

This circuit is a simple 110/220v Automatic changeover circuit that can switching two electric sources to the Loads. It also has auto inverter shutdown. max. Load can be about 30A.

You can download the Gerber file of this PCB from here:

https://www.pcbway.com/project/shareproject/Automatic_changeover_Circuit.html

Parts list:

Relay 24v 10A

Relay 24V 30A

Resistor 100 ohm 2W

Zener diode 24v 1W

Diode 1N4007 (4pcs)

Capacitor 680nF 400v

Capacitor 100uF 50v

Terminal connector 2Pin(2pcs)

Circuit:

*Use 680nF Capacitor instead of 820nF

Video:

Power Saving Circuit for TV and Satellite / Smart Switch

October 01, 2019 Simple Projects

This is Power Saving Circuit, it can be used for any electronic and electric devices that have to turns ON and OFF together at the same time, such as TV and Satellite or PC Monitor and tower(system unit). So it helps to power saving by prevent leaving one of them running all day long.
Maximum load can be 4A if you using a proper heatsink for the SCR.

You can download the Gerber file of this PCB from here:

https://www.pcbway.com/project/shareproject/Power_Saving_Circuit_for_TV_and_Satellite___Smart_Switch.html

Parts list:

SCR C106
Current transformer 5A/5mA
Capacitor 10uF
Bridge diode
Resistor 20K
Resistor 100K
Multiturn Potentiometer 500K
Diode 1N4148
Terminal connector 2PIN

Circuit:

Video:

Color sensor without Arduino / microcontroller

August 17, 2019 Simple Projects

This circuit is Color sensor without using Arduino or any other microcontroller

Using LDR, LEDs, IC 4017 and IC LM358.

You can download the Gerber file of this PCB from here:

https://www.pcbway.com/project/shareproject/Color_sensor_Without_Arduino_Microcontroller.html

Parts List:

IC 4017

IC LM358

Potentiometer 10K

Potentiometer 5K (3pcs)

Red LED (2pcs)

Green LED (2pcs)

BlueLED (2pcs)

LDR

Resistor 100K (3pcs)

Resistor 100 ohm (2pcs)

Resistor 1M

Resistor 5.1K

Ceramic capacitor 100nF

Circuit:

Video:

Visitor counter without microcontroller

August 04, 2019 Simple Projects

This project is Visitor counter Without microcontroller. It can help to Power saving by switch OFF the room lamps when no body in the room.

You can download the Gerber file of this PCB from here:
https://www.pcbway.com/project/shareproject/Visitor_counter_Without_microcontroller.html

Parts list:

IC 40110 (2pcs)

IC 4093

Optocoupler PC817 (2pcs)

7Segments common cathode (2pcs)

Diode 1N4007 (4pcs)

Laser 5v 5mW (2pcs)

LDR (2pcs)

LED

Relay 5V

Transistor S8550

Capacitor 100nF (2pcs)

Capacitor 10uF

Capacitor 220uF

Resistor 1M

Resistor 1.5K (2pcs)

Resistor 100K

Resistor 6.8K

Resistor 4,7K (2pcs)

Resistor 200R (15pcs)

Circuit:

Video:

Active Power Factor Correction Using MC33262

July 24, 2019 Simple Projects

This project is Active Power Factor Correction Using MC33262

You can download the Gerber file of this PCB from here:

https://www.pcbway.com/project/shareproject/Active_power_factor_correction_f0ab61eb.html

Active Power Factor Correction Using MC33262

Parts list:

IC MC33262

1:12 Transformer 4.7mH (Inductance calculated by formulas)

Bridge diode

EMI filter

Ultra fast diodes UF5402(2pcs) - D5 & D6

Capacitor 0.47uF 50v - C4

Capacitor 220uF 450V - C3

MOSFET 8N50E - Q1

Resistor 100K - R6

Resistor 22K(2pcs) - R1 & R4

Resistor 3.3M (2pcs) - R5 & R2

Resistor 30K - R3

Resistor 1.5K - R1

Resistor 2.2R - R7

Circuit:

Following circuit designed for 15W load, you have to calculate the resistor and inductor value using some formulas in the datasheet here:

https://www.onsemi.com/pub/Collateral/MC34262-D.PDF

Results:

Current waveform (yellow line) is for an LED lamp with power factor of 0.68, as you can see the current waveform become sinusoidal after using the circuit.

Video:

For more details please watch this video

Dual Axis solar tracker without microcontroller

May 29, 2019 Simple Projects

This circuit is a Dual Axis solar tracker without Arduino or any other microcontroller, using single IC LM324,

By using Transistors BD139 and BD140 we can drive two motors with max. current 3A (for X-Axis and Y-Axis).

Dual Axis solar tracker without microcontroller

Parts list:

IC1=LM324

LDR (4pcs)

P1 & P3=Potentiometer 20K (2pcs)

P2 & P4=Potentiometer 200K (2pcs)

R1 & R2 & R11 &R12=Resistor 10 ohm (4pcs)

R3 & R5 & R7 & R10=Resistor 20K (4pcs)

R4 & R6 & R8 & R9=Resistor 33K (4pcs)

C1 & C3=Capacitor 220uF (2pcs)

C2=Capacitor 100nF (2pcs)

T1 & T2 & T7 &T8=Transistor BD139(4pcs)

T3 & T4 & T5 & T6=Transistor BD140(4pcs)

D1 to D9=Diode 1N4007(9pcs)

Switch

DC Motor with gearbox (2pcs)

Circuit:

To make dual axis solar tracker we have to make two identical circuit from this diagram:

Since we need two op-amps for each axis, so i used IC LM324 which has 4 op-amps inside (for dual axis).

The diode through positive side of the battery used for reverse battery protection.

Two 20K resistors in series with LDRs used to decreasing LDRs current drawing, because they connected between VCC and GND as light sensor (voltage divider) and when exposed to direct sun the resistance of each LDR become around 300 ohm so the standby current drawing will be 9V/600 which is 15mA for each axis and 30mA for dual axis, but we can simply decreasing this current to only 440uA by using limiting current resistors without affecting the circuit performance.

You can download the Gerber file of this PCB from here:
https://www.pcbway.com/project/shareproject/Dual_Axis_solar_tracker_without_microcontroller.html

Video:

Laser anti theft circuit

May 08, 2019 Simple Projects

This circuit is a simple laser anti theft alarm with SCR, laser, LDR and a few other components.
When the theft body cut the laser beam, the buzzer turns ON and latch (stay ON) until the Reset button pressed.
I designed the PCB in the shape of tiny house (my YouTube channel logo)

Parts list:

BT169

LDR (3pcs)

Laser 5V 5mW (3pcs)

Buzzer

10K Potentiometer

Push button

You can download the Gerber file of this PCB from here:
https://www.pcbway.com/project/shareproject/Laser_anti_theft_circuit.html

Circuit:

Video:

Power saving relay driver

March 24, 2019 Simple Projects

Relay coil after switch ON needs to voltage much lower than its nominal voltage,

We can use this property of relay to saving 85% of the power to increase the battery life in battery powered circuits.

To reduce the current / power consumption we can put a resistor through the relay coil, but since this low current not enough to running the relay at the beginning so we should short out the resistor for 1 second, then the relay switch keep going.

You have to use this formula to calculate the suitable resistor value:

For more explanations please watch this video:

Electronic load using Op-Amp IC 358

February 17, 2019 Simple Projects

Electronic load using Op-Amp IC 358

In this circuit i using IC 358 and some few components to make a simple constant load.

The trick here is connecting a dc voltmeter to the non-inverting input of the op-amp to preset the current before connect it to the battery or the super cap. under test.

For more explanation you can watch the video below.

Parts list:

LM358 : https://www.banggood.com/custlink/Dvv3hO51Df
High power resistor: https://www.banggood.com/custlink/K3GvYjHwRm
Digital DC Voltmeter: https://www.banggood.com/custlink/3vmDYL5TDU
Copper board: https://www.banggood.com/custlink/3KDDmMsPSc
MOSFET IRFZ44N : https://goo.gl/35n5Tb

Potentiometer 100K : https://goo.gl/dKnWCj
Resistor kit (10 Ohm): https://goo.gl/TgSaff

Heatsink: https://www.banggood.com/custlink/D3KGdOSmzf

Circuit:

Video:

For more explanation you can watch the video below

Educational Logic gate PCBWay.com

January 05, 2019 Simple Projects

Educational Logic gate PCB by PCBWay.com
This PCB project designed to learning students how logic gates works
The circuit used 4 ICs to simulation 8 basic logic gates (AND-NAND-OR-NOR-NOT-XOR-XNOR-Buffer).

You can download the Gerber file of this PCB from here:

https://www.pcbway.com/project/shareproject/Educational_logic_gates_PCB.html
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