Wide-range-voltage-to-frequency-converter
This circuit is based upon the change of frequency of the function generator with the input voltage ViN· Generally, the frequency depends upon the capacitan...
Dual-output-dc-dc-converter
The buck-boost configurationnf the MAX634 is well suited for dual output de-de converters. Only a second winding on the inductor is needed. Typically, this sec...
Offline-converter
This nonisolated, unregulated, minimum component converter fills the void between low-power zener regulation and the higher power use of a 60-Hz input transfor...
Regulated-driven-converter
This converter delivers up to 50 mA from a 6-V battery with 78% efficiency. This flyback converter functions by feedback-controlling the frequency of inductive...
High-efficiency-flyback-voltage-converter
Ul is a dual voltage comparator with open collector outputs. The A side is an oscillator operating at 100kHz, and the B side is part of the regulation circuit ...
Unipolar-to-dual-supply-converter
817V The outputs in this circuit are independently variable and can be loaded unsymmetrically. The output voltage remains constant, irrespective of load and ...
Picture-fixer-inverter
The circuit will accept a video signal, separate the sync pulses, invert the video, and add new video to the old sync pulses. The video signal is brought in t...
120Khz-500w-induction-heater
Variable width pulses with fast rise times are provided by Ul, and MC34060 operating at 120kHz, the optimum frequency for heating aluminum alloy containers. Th...
20Khz-arc-welding-inverter
without significant added complexity, and a natural tendency to run away under no-load (high Q) conditions. The 20-kHz control circuit (see Fig. 2) overcomes th...
20Khz-arc-welding-inverter
The Class A series resonant inverter portrayed is well-known and respected for its high efficiency, low cost, and small size, provided that operating frequency...
High-voltage-inverter
The circuit converts a de voltage (V +) to a high-amplitude square wave in the audio-frequency range. The dual timer, IC2, provides an inexpensive alternative ...
Battery-powered-high-voltage-generator
Output voltage great enough to jump a l-inch gap can be obtained from a 12-V power source. A 555 timer IC is connected as an astable multivibrator that produce...
Lsolated-converter
In this circuit. a negative output voltage de-de converter generates a -5 V output at pin A. In order to generate -5 Vat point A, the primary of the transforme...
Power-converter
This circuit consists of an astable multivibrator driving a push-pull pair of transistors into the transformer primary. The multivibrator frequency should~equa...
Low-power-inverter
This low-power inverter uses only 9 parts and turns 10 to 16 Vdc into 60-Hz, 115-V square-wave power to operate ac equipment up to 25 W. The first section of t...
12-Vdc-battery-operated-120-vac-power-source
A simple 120 V: 24 V, center-tapped control transformer and four additional components can do the job. This circuit outputs a clean 200 V pk-pk square wave a...
Positive-input-negative-output-charge-pump
A charge pump is a simple means of generating a low-power voltage supply of opposite polarity from the main supply. The 74Cl4 IC is a self-oscillating driver...
8W-fworescent-lamp-inverter
This circuit has been designed to drive an 8-W fluorescent lamp from a 12-V source using an inexpensive inverter based on the ZTX652 transistor. The inverter w...
Power-inverter
The transformer can be any 6.3 or 12.6 V type. Apply the 12-Vde input so the positive goes to the transformer"s center tap and the negative goes to the two t...
Complementary-output-variable-frequency-inverter
U1 is a 4060 12-stage binary ripple counter that is used as a free-running oscillator; its frequency of oscillation is: 1/2.2 CIR2. The output of U1 is applied...