Saturday, April 10

CDS (Cadmium Sulfide) Light detector Circuit

This kit works as a "light" detector which energizes a miniature relay when the CDS (Cadmium Sulfide) photo resistor detects bright light. The relay is de-energized in subdued light. A trim pot is provided for adjusting the sensitivity of the detector....

Video Amplifier

Part List : R1= 15Kohm+15Kohm R12= 100ohm trimmer C3=4.7pF ceramic R2-3-4= 10Kohm R13-15= 47ohm IC1= LH0032 R5.....9= 1Kohm R14= 10Kohm S1= 1X2 mini switch R10= 820ohm C1= 10uF 63V MKT S2= 1X6 sel. R11= 1Mohm C2-4= 100nF 63V J1-2= BNC connec...

Video signal emphasis Circuit

With this circuit we can amplification selectively the high signal of picture frequencies [Video] with result bigger clarity than this. The circuit should be placed between a Video unit and the reception Scart or the plug Video input of television receiver....

Wednesday, April 7

IC LM350. t oBattery Charger

The schematic diagram can be used for charging the 12V lead acid batteries. The circuit is designed as a constant voltage source with a negative temperature coefficient. The transistor Q1 (BD 140) is used as the temperature sensor. The transistor Q2...

Simple Nicad Battery Circuit

This simple and low cost battery charger uses a single transistor as a constant current source. The voltage across the pair of 1N4148 diodes biases the base of the BD140 medium power transistor. The base-emitter voltage of the transistor and the forward...

Monday, April 5

0-15 VDC Power Supply

This circuit of power supply, are very simple in the manufacture, the finding of his materials , is very easy and cost, small. The output voltage is stabilised and is regulated in the region from 0V until + 15V dc, with biggest provided current 1 A....

Electronic Fuse Circuit

The power supply, with electronic stabilisation - mainly those of laboratories - it should they are protected from over current that emanates from short-circuits, erroneous association or damage of repaired appliance. The circuit offers effective protection...

BROEDHIEN