Circuit Project Electronic

Here is easy circuit Ramp Generator from pulse oscillator.
use IC LM334 an Transistor.
Input 1kHZ to Ouput Ramp Wave 1KHz.
This be Ramp Generator circuit, By have easy work be modify from a signal Squarewave Oscillator be a signal Ramp wave triagle. For pillar equipment in the circuit [...]

This circuit is Light Meter, use IC LM334 is easy circuit.
Supply Volt 1.5-20V, Meter : 1mA.
PC1 = CdS Photocell or LDR.
If you are looking for Light meter circuit that good and easy. I inviting for to advise this circuit , because use IC LM334 (3-Terminal Adjustable Current Source) use easy. follow [...]

Here is Calibrated Led Circuit. It Use IC LM334 (3-Terminal Adjustable Current Source) For Display Led Current. By current that flow through LED control with the value R.
Such as
R = 10 OHM : I LED =6.4mA
R = 15 OHM : ILED = 4.3mA
In order that you can use Volt supply 3V-20V and [...]