Category Archives: Power Supply

Featured Posts

MAX1703 Single-Cell Boost Converter Circuit

When you design a circuit with only a single-cell battery, you will need boost-converter to provide enough voltage for most ...

Read More

55MHz Scope Sensitivity Amplifier

Scope sensitivity amplifier is a vital front-end signal processing for every scope instruments. The function of this circuitry is simple: ...

Read More

Two-Band Bxandall Active Tone Control

Using active circuit for tone control means that we can provide cut and boost, maintaining overall amplifying factor of original ...

Read More

Pulse Width (PWM) Controller Circuit

A LM3900 quad operational amplifier can be used to build a pulse width (PWM) controller. The LM3900 was chosen because ...

Read More

Small TV Modulator Using A Motorola MC1374

How can television modulator be small and simple like this? First, it uses integrated circuit, and the second, any TV ...

Read More

Transistor Buffer for Zener Diode Voltage Regulator

Buffering for the zener is provided by the impedance matching and current amplifying characteristics of the emitter follower and draw less current from it. To a Zener regulator, it’s a useful adjunct. The capacitor on the right circuit is used … Continue reading

Posted in Power Supply | Tagged , | Comments Off on Transistor Buffer for Zener Diode Voltage Regulator

220V Touch Switch

This is a 220V Touch Switch circuit. This circuit is used as switch which turn off and turn on the the electronic device that is connected to the 220V home electrical installations. Here is the schematic diagram of the circuit: … Continue reading

Posted in Control Electronics, Power Supply | Tagged , | Comments Off on 220V Touch Switch

LM317 Variable Output (1.2-17V) Regulator

Variable output regulator is valuable for your test bench tools. This regulator produce variable voltage source from 1.2 to 17Volts. Series type regulator consist of something equivalent to variable-resistance device, an LM317 for this case. Since series-pass regulator dissipates power … Continue reading

Posted in Power Supply | Tagged , | Comments Off on LM317 Variable Output (1.2-17V) Regulator

Voltage Regulator with Op-Amp and Transistors

With feedback, we can do very much better and achieve a nearly perfect voltage source. We can see this principle which is shown in the circuit below. Using a voltage divider on the output or the voltage reference, the output … Continue reading

Posted in Power Supply | Tagged , | Comments Off on Voltage Regulator with Op-Amp and Transistors
« 1 2 3 4 5 6 7 8 9 10 11 12 ... 26 »