I have a very basic inverter circuit with a 2n3053. I basically need around 5V at the collector terminal when the base is at 0V. I am able to achieve this provided the load is not connected. When the load is connected at the collector, the 5V drops to around 0.6 V or so (depending on the pull up resistor). After going through the load's data sheet I realized that there is an input impedance of 1.5K ohm. I could reduce the pull up resistor value to 100 ohms, but don't want to do so because of the high current that will flow through it.
I don't know much about impedance matching but I think that's the way to sort this problem out. Could someone help me? Can I make an emitter follower to match the impedance?