2 x 1W Stereo Amplifier
Circuit diagram of 2 x 1W Stereo audio Amplifier with IC KA2209
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3W Stereo Audio Amplifier
The circuit module of 3W Stereo Audio Amplifier based BA5406
1W Stereo Amplifier using LM386N
The manual circuit for 1W Stereo Audio Amplifier using LM386N
18W Power Audio Amplifier
Circuit manual of 18W Power Audio Amplifier based on power IC HA13118
7W Amplifier Circuit TDA2003
Manual Document of 7W Amplifier Circuit TDA2003
10W Stereo Power Amplifier TDA2009A
Circuit Kit Manual of 10W Stereo Power Amplifier with TDA2009A
Stereo Valve Power Amplifier
Complete manual for Stereo Valve Power Amplifier 2×90 Watt using EL34
230V Automatic Night Lamp
This is the circuit diagram of 230V automatic night lamp based photo resistor to sensing the light environment. When the condition is dark enough, the one or more lamps will be turned on and when the condition is bright enough, then the lamps will be turned off.
Battery Charger + Small LED Lamp based Solar Cell / Photovoltaic
This is the circuit diagram of rechargable battery charger which use solar cell / photovoltaic as the DC source. This circuit works to charge 3 types of rechargable batteries that are lead acid, Ni-Cd and Li-ion. The lead-acid batteries are generally utilized in emergency lamps and UPS. The photovoltaic module or solar cell explained in… Read More »