A PLC works by continually scanning a program. We can think of this scan cycle as consisting of 3 important steps. There are typically more than 3 but we can focus on the important parts and not worry about the others. Typically the others are checking the system and updating the current internal counter and […]
Archives for Data sheets
On off Switch Control
On off Switch Control circuit using CD4027 On off Switch Control circuit using CD4027
Headphone amplifier ic
Headphone amplifier ic circuit using TL072, BD139, BD140
The 3.5MHz amateur band circuit
The 3.5MHz amateur band using LM386, MPF102, BC548 Super SO SSB Receiver. An ultra Simple receiver for the 3.5MHz amateur band using LM386, MPF102, BC548
Power Supply
Dual Power Supply circuit using Transformers This is dual power supply using voltage regulator BC547B and Dioda. It’s the best and simplest choice for most non-critical applications. The 3 terminals are input, ground and output. The Dioda can provide up to 1A load current and it have onchip circuitry to prevent damage in the event […]
