Institute Newton C. Braga

Circuit Bench

6 W per Channel Amplifier TDA1521 2 (CB15391E)
This amplifier for sound equipment was found in the Philips Databook of 1990. The circuit can be...
4093 Programmable Active Cycle Lamp Flasher (CB13186E)
The circuit in the figure causes an incandescent lamp to flash at a speed determined by the...
Light switch (CB8258E)
Using an LDR, this Philips circuit directly activates a relay when light strikes the sensor. The...