10 W Amplifier (CB6287E)

For an 8 ohm load, this Motorola circuit was found in a 1968 documentation. The transistors are of the time and the power supply must be symmetrical.

| Clique na imagem para ampliar |

Precision Tone Switch 4046 (CB25256E)
Using a 4046 PLL this circuit recognizes a 1.6 to 1.8 kHz tone by driving an output LED. The...
TTL Transistors and Diodes Tester (CB13942E)
The LEDs, in addition to flashing if the transistor is good, also indicate the polarity of the...
Integrated alarm (CB8926E)
Found in an EDN from the 1980s, this circuit uses a double 555. The circuit activates a relay that...