This is a simple design for inverter that produces 12V to 120V voltage and frequency line. This circuit is work with based on the transistor. The wattage depends on which transistors you use for Q1 and Q2, as well as how "big" a transformer you use for T1. The inverter can be constructed to supply anywhere from 1 to 1000 (1 KW) watts. This is the figure of the circuit.
The easiest and least expensive way to get a large T1 is to re-wind an old microwave transformer. These transformers are rated at about 1KW and are perfect. Go to a local TV repair shop and dig through the dumpster until you get the largest microwave you can find. The bigger of the microwave is the bigger transformer. Remove the transformer, being careful not to touch the large high voltage capacitor that might still be charged. If you want, you can test the transformer, but they are usually still good. Now, remove the old 2000 V secondary, being careful not to damage the primary. Leave the primary in tact. Now, wind on 12 turns of wire, twist a loop (center tap), and wind on 12 more turns. The gauge of the wire will depend on how much current you plan to have the transformer supply. Enamel covered magnet wire works great for this. Now secure the windings with tape. That is all there is to it. Remember to use high current transistors for Q1 and Q2. The 2N3055's in the parts list can only handle 15 amps each. Q1 and Q2, as well as T1, determine how much wattage the inverter can supply. With Q1, Q2=2N3055 and T1= 15 A, the inverter can supply about 300 watts. Larger transformers and more powerful transistors can be substituted for T1, Q1 and Q2 for more power. The capacitor is using tantalum.
Part:
C1, C2 - 68 uf, 25 V Tantalum Capacitor
R1, R2 - 10 Ohm, 5 Watt Resistor
R3, R4 - 180 Ohm, 1 Watt Resistor
D1, D2 - HEP 154 Silicon Diode
Q1, Q2 - 2N3055 NPN Transistor (see "Notes")
T1 - 24V, Center Tapped Transformer (see "Notes")
The easiest and least expensive way to get a large T1 is to re-wind an old microwave transformer. These transformers are rated at about 1KW and are perfect. Go to a local TV repair shop and dig through the dumpster until you get the largest microwave you can find. The bigger of the microwave is the bigger transformer. Remove the transformer, being careful not to touch the large high voltage capacitor that might still be charged. If you want, you can test the transformer, but they are usually still good. Now, remove the old 2000 V secondary, being careful not to damage the primary. Leave the primary in tact. Now, wind on 12 turns of wire, twist a loop (center tap), and wind on 12 more turns. The gauge of the wire will depend on how much current you plan to have the transformer supply. Enamel covered magnet wire works great for this. Now secure the windings with tape. That is all there is to it. Remember to use high current transistors for Q1 and Q2. The 2N3055's in the parts list can only handle 15 amps each. Q1 and Q2, as well as T1, determine how much wattage the inverter can supply. With Q1, Q2=2N3055 and T1= 15 A, the inverter can supply about 300 watts. Larger transformers and more powerful transistors can be substituted for T1, Q1 and Q2 for more power. The capacitor is using tantalum.
Part:
C1, C2 - 68 uf, 25 V Tantalum Capacitor
R1, R2 - 10 Ohm, 5 Watt Resistor
R3, R4 - 180 Ohm, 1 Watt Resistor
D1, D2 - HEP 154 Silicon Diode
Q1, Q2 - 2N3055 NPN Transistor (see "Notes")
T1 - 24V, Center Tapped Transformer (see "Notes")
0 comments:
Post a Comment