Voltz
New Member
Im making this my first project, a power supply to power all my breadboard projects, It has to be variable, 0-30VDC and provide up to 5A, - so far I know I need
My main issues are
1.) Where can I get a capacitor that big
2.) What's an external Transistor for the Voltage Regulator
3.) The Wiring diagram for the Regulator
I'm also planning to use a Rotary Switch to change the output waveform from AC (direct from the transformer), DC (Rectified, Smoothed and Regulated), Square Wave (Same as DC but the output run through a 555 astable Timer) and Sawtooth (555 Timer again) - both 555 Timer circuits can have variable capacitors to change the frequency
Im working on a schematic in Eagle but its proving tough - any advice?
1 x 220000uF (nearest value to 138000uF) for 3V Ripple at 5A
1 x 230VAC to 30VAC Transformer
1 x Bridge Rectifier
1 x LM723C Variable Regulator (It can do above 10A apparently with an external Transistor [But I don't know what that means and 0-37VDC although I only need it to do 0-30VDC)
1 x Red LED (Just to tell when the power supply is on)
1 x 5A Fuse (I'm using an auto circuit break)
1 x 275V Varistor (For Surge Protection)
Some Resistors (I'm struggling with the wiring diagram for the LM723C)
Some Capacitors (Same as above - for the Voltage Regulator)
A Potentiometer to control the output Voltage
A Chassis
A Voltmeter
An Ammeter
My main issues are
1.) Where can I get a capacitor that big
2.) What's an external Transistor for the Voltage Regulator
3.) The Wiring diagram for the Regulator
I'm also planning to use a Rotary Switch to change the output waveform from AC (direct from the transformer), DC (Rectified, Smoothed and Regulated), Square Wave (Same as DC but the output run through a 555 astable Timer) and Sawtooth (555 Timer again) - both 555 Timer circuits can have variable capacitors to change the frequency
Im working on a schematic in Eagle but its proving tough - any advice?