DC to AC Inverter by IC 555

This be basic AC inverter Circuit. Convenient for the initiator who have to is extremely fond of something experience. Because of use IC 555 highly popular, perform produce the frequency ,then enlarge with transistor NPN and PNP number TIP41 and TIP42 drive the coil transformer.

DC to AC Inverter by IC 555 Circuit Diagram:

DC to AC Inverter by IC 555 Circuit Diagram

Get by can pay Voltage output about 120V to 230V at frequency 50Hz. By have R4 perform control the frequency and should use. Voltage supply about 5V to 15V the detail sees in circuit picture sir.

Police Lights associate crystal rectifier Project

This circuit uses a 555 timer that is setup to each runn in associate Astable operative mode. This generates a nonstop output via Pin three within the type of a sq. wave. once the timer's output changes to a high state this triggers the a cycle the 4017 4017 decade counter telling it to output consecutive sequent output high. The outputs of the 4017 ar connected to the LEDs turning them on and off.

Police Lights and LED Project

Parts List

1x - NE555 Bipolar Timer
1x - 4017 Decoded Decade
6x - 1N4148 Diode
1x - 1K Resistor (1/4W)
1x - 22K Resistor (1/4W)
2x - 4.7K Resistor (1/4W)
6x - 470 Resistor (1/4W)
1x - 2.2µF Electrolytic Capacitor (16V)
2x - BC547 NPN Transistor
2x - LED (Blue)
2x - LED (Red)
1x - 9V Voltage Battery

Solar Cell Array Charger with Regulator

Solar Cell Array Charger with Regulator circuit can be used to charge batteries from a solar cell array. The circuit consists of an oscillator, a DC-DC step-up or ‘boost’ converter and a regulator that pro-vides regulation of the output voltage.The oscillator is built around a hex Schmitt trigger inverter IC, the 40106B, one resistor, R1, inserted between the input and the output of one of the gates in the 40106 to supply charge to C3. Depending on the values of resistor R1 and capacitor C3 you’re using in the circuit, the oscillator will operate at different frequencies, but a frequency below 100 kHz is recommended. 

By consequence, the oscillator frequency should not exceed the maximum ripple frequency of capacitor C2 connected on the output. C2 should be an electrolytic capacitor with a DC working voltage larger than the desired output voltage. Besides, it should have a low ESR (equivalent series resistance). 

Solar Cell Array Charger with Regulator Circuit Diagram :
Solar Cell Array Charger with Regulator Circuit Diagram

IC1A is used as a buffer, ensuring that the oscillator sees a light, fairly constant load and so guaranteeing that the output frequency remains stable (within limits, of course). VCC of the Schmitt trigger can be connected directly to the battery charged, provided the charged batter y voltage does not exceed the max. or min. limits of the Schmitt trigger’s supply voltage. This ensures the Schmitt trigger can operate even if little power is obtained from the solar cell array. 

When transistor T2 is turned on, (output from oscillator buffer IC1A is high), a collector current flows through inductor L1 which stores the energy as a magnetic field and creates a negative voltage VL1. When transistor T2 is switched off, (output from oscillator buffer IC1A is low), the negative voltage VL1 switches polarity and adds to the voltage from the solar cell array. Consequently, current will now flow trough the inductor coil L1 via diode D1 to the load (capacitor C2 and possibly the battery), irrespective of the output voltage level. 

Capacitor C2 and/or the battery will then be charged. So, in the steady state the out-put voltage is higher than the input voltage and the coil voltage VL1 is negative, which leads to a linear drop in the current flowing through the coil. In this phase, energy is again transferred from the coils to the out-put. Transistor T2 is turned on again and the process is repeated. A type BC337 (or 2N2222) is suggested for T2 as it achieves a high switching frequency. Inductor L1 should have a saturation current larger than the peak current; have a core material like ferrite (i.e. high-frequency) and low-resistance. Diode D1 should be able to sustain a forward current larger than the maxi-mum anticipated current from the source. It should also exhibit a small forward drop and a reverse voltage spec that’s higher than the output voltage. If you can find an equivalent Schottky diode in the junk box, do feel free to use it. 

The most important function of the shunt regulator around T1 is to protect the batteries from taking damage due to overcharging. Besides, it allows the output voltage to be regulated. Low-value resistor R3 is switched in parallel with the solar cell array by T1 so that the current from the solar cell array flows through it. Zener diode D2 is of course essential in this circuit as its zener voltage limits the output voltage when T1 should be turned on, connecting the solar cell array to ground via R3. In this way, there is no input voltage to the boost converter and the battery cannot be overcharged. 

Sealed lead-acid (SLA) batteries with a liquid electrolyte produce gas when over-charged, which can ultimately result in damage to the battery. So, it’s important to choose the right value for zener diode D2. Special lead-acid batteries for solar use are available, with improved charge-discharge cycle reliability and lower self-discharge than commercially-available automotive batteries. 

Finally, never measure directly on the out-put without a load connected the ripple current can damage your voltmeter (unless it’s a 1948 AVO mk2).

Simple Solar Charger

Simple Solar charger circuit to take advantage of sunlight shining on the earth can continue to be utilized to serve as a power source so that we can at least save on electricity prices continuing to rise, below is one of a series of simple power plant can be created and used to fill your motorcycle battery or for emergency lights.

The circuit scheme of Solar Power Generation

Simple Solar charger circuit

Sunlight is received by the solar panels are then processed into electricity, but electricity generated from each panel is still too small where the 8 Cell Panel arranged in series only mrnghasilkan voltage of approximately 4 volts with a current 200 mA.
nah therefore required an electronic circuit to increase the voltage and current enough to be used as a Battery Charger.
Electronic Rainmaking act as a series of DC to DC Inverter (DC to DC Inverter), which was built by two pieces of Capacitor, Resistor 1, a transistor, a diode, and a coil which is the point of the creation of this series.

The circuit was built with a single oscillator system (blocking oscillator) which was built by the transistor and a coil in which the primary winding totaling 45 turns and 15 turns in the secondary as feedback to provide the voltage at the base of the transistor output of the primary winding connected to the diode and used to The battery charging.

When the circuit is coupled with the Emergency Neon Lights will certainly get enough voltage to light at night for free. because its batteries during the day in charge by the sun.

The success of this experiment is a way of making a coil which is the same way with the topic of emergency fluorescent lights
List of Components
  • 8 cell 0.5v 200 mA solar panel (sold in many electronics stores) or make use of solar panels used a calculator that is damaged / not used anymore you dismantle it and take solarcell
  • Capacitor 100 UF
  • Capacitor 10 UF
  • Transistor TIP 31 or similar
  • Resistor 1 K
  • Diode BY 207 (Diada 5 Ampere) or similar
  • Accu Motor.
  • Approximately 3 meters of 0.25 mm diameter wire email.>
  • Ferite rods are frequently used in radio-AM radio.

Outdoor LED Solar Lights

This Outdoor LED Solar Garden Lights project is a hobby circuit of an automatic garden light using a LDR and 6V/5W solar panel. During day time, the internal rechargeable 6 Volt SLA battery receives charging current from the connected solar panel through polarity protection diode D9 and current limiting resistor R10. If ambient light is normal, transistor T1 is reverse biased by IC1 (LM555). Here IC1 is wired as a medium current inverting line driver, switched by an encapsulated light detector (10mm LDR). Multi-turn trimpot P1 sets the detection sensitivity.  

Outdoor Garden Solar Lights Circuit Diagram:

Solar Lights Circuit Diagram

When ambient light dims, transistor T1 turns on to drive the white LED string (D1-D8). Now this lamp load at the output of T1 energizes. Resistors R1-R8 limits the operating current of the LEDs. When the ambient light level restores, circuit returns to its idle state and light(s) switched off by the circuit.

Assemble the Outdoor Solar Lights circuit on a general purpose PCB and enclose the whole assembly in a transparent plastic box. Drill suitable holes on the top of the enclosure to mount the mini solar panel (SP1) and the light sensor (LDR), and in front for fitting power switch (S1) and the sensitivity controller (P1). Fix the battery inside the cabinet using a double-sided glue tape/pad. Finally, the LDR should not be mounted to receive direct sunlight.

It must be mounted at the top of the enclosure, pointing to the sky say southwards. This circuit is very simple. So interested and experienced hobbyists can alter/modify the whole circuit as per their own ideas without any difficulty (Just try a 6V relay with T1 to drive more number of LED strings).

Simple G Purpose Preamplifier

This is a Simple G - Purpose Preamplifier Circuit Diagram. This amplifier is useful for audio and video applications. Gain is set by Rf and the voltage gain of this amplifier is approximately 1 + i//560, where R/vs, in ohms. Bandwidth depends on gain selected, but typically it is several MHz. R/= 5.1 KOhmhm, which produces a gain of 10 (20 dB) voltage.

Simple G - Purpose Preamplifier Circuit Diagram

Simple G Purpose Preamplifier Circuit Diagram


Simple Signal Tracer Injector

This is a simple signal tracer signal circuit diagram.This signal tracer injector has been designed to inject or detect a specific signal into an audio circuit, tracer may also be used as a simple monitor or amplifier. The injector is a CMOS oscillator with period approximately equal to 1 x Cl x R2 seconds. The values are given for 1 kHz operation.

 Simple Signal Tracer Signal Circuit Diagram

Simple Signal Tracer Signal Circuit Diagram

Resistors R3 and R4 divide the output to 1 V; Whereas the oscillator employs the gates in their digital mode, the tracer used them in a linear fashion by applying negative feedback from output to input. They are used in much the same way as op amps. 

The circuit uses positive ground. It offers an advantage at the earphone output because one side of the earphone must be connected to ground via the case. Use of a positive ground allows the phone to be driven by the two N-channel transistors inside the CD4001 which are arranged in parallel and are thus able to handle more current for better volume.
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