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Ac-to-DC converter – Circuit Schematic
Ac-to-DC converter
This circuit includes a PMOS enhancement-mode FET input buffer amplifier, coupled to a classical absolute value circuit which essentially eliminates the effect...
Power voltage-to-current converter – Circuit Schematic
Power voltage-to-current converter
Low cost converter is capable of supplying constant ac currents...
Switching inverter for 12v systems – Circuit Schematic
Switching inverter for 12v systems
This PWM control circuit provides the control pulse to the DMOS Power Switch in the flyback circuit. The output of the PWM is a pulse whose width is proportiona...
power supply for PC – Circuit Schematic
power supply for PC
The UPS is basically an ac inverter that is powered by a 12-V, lead-acid automobile battery. During power outages, it can supply several minutes of power for an...
Frequency-to-voltage converter – Circuit Schematic
Frequency-to-voltage converter
In these applications, a pulse input at % is differentiated by a C-R network and the negative-going edge at pin 6 causes the input comparator to trigger the tim...
Bipolar dc-dc converter requires no inductor – Circuit Schematic
Bipolar dc-dc converter requires no inductor
Inverters Ula and Ulb form a 20-kilohertz oscillator whose square wave output-further shaped by D2, R4, and R5 and by D3, R6, and R7—drives power field-e...
Self oscillating flyback converter – Circuit Schematic
Self oscillating flyback converter
Diode Dl prevents negative spikes from occurring at the MOSFET gate, the 100 ohm resistor is a parasitic suppressor, and Z1 serves as a dissipative voltage regu...
DC to DC converter electronic schematic – Circuit Schematic
DC to DC converter electronic schematic
Those of you who frequently use devices that work on battery or you need a negative trend at the moment you have a single positive, will definitely look for a c...
Power Mosfet Inverter – Circuit Schematic
Power Mosfet Inverter
This inverter can deliver .high-voltage ac or de, with a rectifier and filter, up to several hundred volts. The secondary and primary of T1-a 12.6 to 440 V pow...
12V DC to 85V DC Converter – Circuit Schematic
12V DC to 85V DC Converter
The circuit below is a DC to DC converter using a standard 12 VAC center tapped power transformer wired as a blocking oscillator. The circuit is not very effici...
9V to 5V converter schematic with 555 – Circuit Schematic
9V to 5V converter schematic with 555
A 555 timer can be used to generate a squarewave to produce a negative voltage relative to the negative battery terminal. When the timer output at pin 3 goes po...
500kHz to 4 MHz Converter – Circuit Schematic
500kHz to 4 MHz Converter
This converter allows reception of signals below 500 kHz on a 3.5 ? 4 MHz HF receiver. It should therefore be useful for those with receivers that do not receiv...
30V from 5V converter – Circuit Schematic
30V from 5V converter
I made the power supply which makes about +30V with +5V power supply. The direct current is changed into the alternating current by the oscillator which used t...
Inverter circuit for florescents – Circuit Schematic
Inverter circuit for florescents
This inverter is very easy to construct, reliable, and even powerful enough to light up a 15W florescent tube (if you cool your transistor well). The only hard-...
500W 12V to 220V inverter – Circuit Schematic
500W 12V to 220V inverter
Using this circuit you can convert the 12V dc in to the 220V Ac. In this circuit 4047 is use to generate the square wave of 50hz and amplify the current and the...
12 Volt Fluorescent inverter for 20 - 40 Watt tubes – Circuit Schematic
12 Volt Fluorescent inverter for 20 - 40 Watt tubes
This is a low-cost project for 20 or 40 watt fluorescent tubes. However the most efficient is to use a 40 watt tube (or two 20 watt tubes in series). It's a cir...
DC to AC inverter – Circuit Schematic
DC to AC inverter
This DC-to-AC inverter schematic produces an AC output at line frequency and voltage. The 555 is configured as a low-frequency oscillator, tunable over the freq...
12v to +5V, -12V, +12V, +24V adaptor – Circuit Schematic
12v to +5V, -12V, +12V, +24V adaptor
Many times we needed a variety of voltages, from a battery 12V. With the circuit, we can take voltages smaller or bigger, positive or negative, from a battery 1...
6v to 12v converter – Circuit Schematic
6v to 12v converter
This 6V to 12V converter circuit is made with an IC from SGS with several additional components. The IC is a TDA2003 but it can be replaced with a TDA2002. The ...
Pulse Voltage Multiplier – Circuit Schematic
Pulse Voltage Multiplier
It still uses a transistor to do some switching, and it still needs a pair of diodes and capacitors, as would be used in a conventional multiplier, but it does...