HA1377 Bridge Amp BCL 17W (with PCB)
http://www.elecfree.com/circuit/car-power-amp/ha1377-bridge-amp-bcl-17w/
DC Power Supply
http://www.elecfree.com/circuit/power-supply/dc-power-supply/
TDA820M Mini Amp 2W+2W
http://www.elecfree.com/circuit/power-amplifier/tda820m-mini-amp-2w2w/
Car NiCad Charger
http://www.uoguelph.ca/%7Eantoon/gadgets/carnc12.htm
TDA1908 Amplifier CAR AUDIO OTL 8W
http://www.elecfree.com/circuit/car-power-amp/car-power-amp_Circuit-02.php
Simple Regulator By Transistor (C1061)
http://www.elecfree.com/circuit/power-supply/simple-regulator-by-transistor-c1061/
Power Amplifier OCL 300W HIFI by MJ15004,MJ15003
http://www.elecfree.com/circuit/power-amplifier/300w-power-amplifier-ocl-by-transister/
Light Sensor With Hysteresis
http://www.uoguelph.ca/%7Eantoon/circ/sensor4.htm
Single Cell Sealed Lead Acid Charger
http://www.uoguelph.ca/%7Eantoon/circ/SLAC.htm
Power supply regulator 0-30V 1A by IC 741 + Transistor 2N3055 & 2N3565
http://www.elecfree.com/circuit/power-supply/power-supply-regulator-0-30v-1a-by-ic-741-transistor-2n3055-2n3565/
