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Power pulse circuit by LM350 and NE555

This circuit can use to drive lamp,power LED,DC motor etc. Adjust R5 for output amplitude.Adjust R1 for output power .The LM350 is adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range.This circuit requires 5-15V power supply. Continue Reading »

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Function generator by 566

This is simple function generator that generate square and triangle wave.<cut>The frequency determine by R and C1.At 12V power supply the output will not fall to ground. For triangle wave it is between 4 – 6V and 6-11.5V for square wave.

Connect the output to audio amplifier input.The power supply should be regulator 15V.

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1.2 to 20 V, 3A power supply

. This circuit using LM350 adjustable 3 terminal positive voltage regulator is capable of supplying in excess of 3A over a 1.2V to 33V output range. Continue Reading »

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Programmable power supply with LM317

.This circuit can program output voltage by turn-on/off transistors.When transistor turn on the resistor R will be connected to ground for determine output voltage. The maximum voltage of this circuit is 27V when input voltage is 28V. Continue Reading »

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Adjust negative power supply by 7905

7905 is a negative regulator.<cut>But we can use it as adjust negative power supply.The buttom circuit can adjust output from -5 to -30V when input is -5.5 to 35V.

Example :Vin = -20 V

Radj Vout
33 -5.74
100 -6.99
330 -11.03
680 -18.20

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8-watt audio power amplifier

The LM383 is an affordable, high-performance amplifier suitable
for automotive applications. High current carrying capacity (3.5a)
enables the device to low impedance loads with low drive power
Distortion. The LM383 is current limited and thermally protected.<cut>
High voltage protection is available (LM383A), the
Way, the amplifier to withstand 40V transients on its offer.
The LM383 is in a 5-pin TO-220 package.

This circuit can use with 4 ohms speaker.LM383 MUST be installed on a heat sink.

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Pink noise generator circuit with MM5837N

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This circuit will generate broadband pink noise signal.It is simple and easy to build.The main IC is MM5837N digital noise source is an pseudo random sequence generator design for audio applications.

Connect the output to audio amplifier input.The power supply should be 15V regulator.Try to change R and C for frequency as you want.

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White noise generator circuit with MM5837N

This circuit will generate broadband white noise signal. <cut>It is simple and easy to build.The main IC is MM5837N digital noise source is an pseudo random sequence generator design for audio applications.

Connect the output to audio amplifier input.The power supply should be regulator 15V.

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1 Hz Timebase with CD4017

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This circuit will generate 1Hz timebase with CD7014.The input will divided by 10 so this circuit called a 10 divider circuit.You can use 10Hz timebase circuit from here [Click]

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10 Hz Timebase with CD4017

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This circuit will generate 10Hz timebase with CD4017.The input will divided by 6 so this circuit called a 6 divider circuit.You can use 60Hz timebase circuit.

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