Pulse Charger for reviving tired Lead Acid batteries
https://www.electronics-lab.com/project/pulse-charger-for-reviving-tired-lead-acid-batteries/
Description If you own a motorcycle, a motor home, a caravan, a lawn mover, a day cruiser or maybe a vintage car you must at some point had to write off a lead acid battery. When a battery is improperly charged or allowed to self-discharge as occurs during non-use, sulphate crystals build up on the […]
400VA AC Light Dimmer
https://www.electronics-lab.com/project/400va-ac-light-dimmer/
Schematic Description This is a simple TRIAC AC load dimmer used to control the power of a resistive load such as incandescent lamp or heater element. The max load it can handle is 400VA. Such a circuit is often found on cheap commercial light dimmers and is proven to work reliable for the rated power. […]
3-30 V/2.5 A Stabilized power supply
https://www.electronics-lab.com/project/3-30-v2-5-a-stabilized-power-supply/
Copyright of this circuit belongs to smart kit electronics. On this page, we will use this circuit to discuss improvements and we will introduce some changes based on the original schematic. General Description This is a very useful project for anyone working in electronics. It is a versatile power supply that will solve most of […]
0-50V 2A Bench power supply
https://www.electronics-lab.com/project/0-50v-2a-bench-power-supply/
I use the lm10 IC because it has a reference voltage and thats useful for dc power supply. With two ICs can take different output voltage and amperage. This circuit is protected from short circuit.P2 is for controlling the current at the range of 0-2A. Stabilize the output voltage with R4 on negative pin on […]
13.8V 20A power supply
https://www.electronics-lab.com/project/13-8v-20a-power-supply/
Regulated DC power supply, short circuit safe, and with current limiter. This PSU has been especially designed for current-hungry ham radio transceivers. It delivers safely around 20Amps at 13.8V. For lower currents, a separate current limiting output, capable of 15ma up to a total of 20A has been added. Let us see what we have […]
0-30 Vdc Stabilized Power Supply with Current Control 0.002-3 A
https://www.electronics-lab.com/project/0-30-vdc-stabilized-power-supply-with-current-control-0-002-3-a/
The copyright of this circuit belongs to smart kit electronics. In this page, we will use this circuit to discuss improvements and we will introduce some changes based on the original schematic. General Description This is a high-quality power supply with a continuously variable stabilized output adjustable at any value between 0 and 30VDC. The […]
MAX2606 – Hands-Free Car Kit for Cell Phones
https://www.electronics-lab.com/project/max2606-hands-free-car-kit-for-cell-phones/
This project is car hands free that retransmits the audio signal from a cell phone to the FM broadcast band. By placing the cell phone’s speaker near the microphone, the user can use the phone as a hands-free device while driving. Specifications Power supply: +2.7V to +5.5V stab – 2.1mA RF power: -10dBm Impedance: 50-75 […]
FM VCO Transmitter
https://www.electronics-lab.com/project/fm-vco-transmitter/
This is a VCO FM Transmitter with range 500m – 4km depending on antenna used. Specifications Power supply: 12-14 V stab., 100 mA RF power: 400 mW Impedance: 50-75 ohm Frequency range: 87,5-108 MHz Modulation: wideband FM Description This circuit originally published on www.pira.cz but a new PCB design is introduced here. Connect the 6 […]
FM Transmitter using MAX4467 & MAX2606
https://www.electronics-lab.com/project/fm-transmitter-using-max4467-max2606/
his is a small circuit with two maxim’s ic, MAX4467 as microphone amplifier and MAX406 as VCO FM transmitter. It’s suitable for short range FM transmittion aka wireless FM microphone. Description This article originally published on in issue 323, July 2003 of Elektor magazine but a new PCB design is introduced here. Here is […]
4 Watt FM Transmitter
https://www.electronics-lab.com/project/4-watt-fm-transmitter/
Copyright of this circuit belongs to smart kit electronics. In this page we will use this circuit to discuss for improvements and we will introduce some changes based on original schematic. General Description This is a small but quite powerful FM transmitter having three RF stages incorporating an audio preamplifier for better modulation. t has […]