Archive for tag: Adapter

RS-232-RS-485 Protocol Translators

Uncategorized | By: Diagram mania

This is a protocol translator circuit. This circuit uses the MAX3162, it contains both  RS-485 and RS-232 transmitters  and receivers. This IC contains wide range of communication devices, that can convert bidirectionally between RS-485 and RS-232 signals. Here is the circuit : The upper circuit is the translator for point to point application, and the […]

Automotive-Car Power Adapter For 3V, 6V, or 9V DC Operated Devices

Power Supply circuits | By: Diagram mania

In automotive environment, it’s common that only single voltage power outlet is available. Using  the very popular LM317 voltage regulator IC, we can build a general purpose DC adapter to adapt car’s power outlet voltage (12-14 Volts) to supply small DC devices requiring lower voltage level. On the following schematic diagram for the car power […]

Switchable 6V, 9V, and 12V Linear Voltage Regulator

Power Supply circuits | By: Diagram mania

  We can build a multiple voltage power supply 6, 9, and 12V  (AC-DC Adapter) with the circuit shown in the following schematic diagram.  Not only provide multiple voltage output with single voltage supply, this circuit add the benefit of regulating the voltage for better stability. A transformer with rectifier diodes and filtering capacitor can […]

Maxim MAX1555 Battery Charger Pin Description and Datasheet

Battery and Charger Diagram | By: Diagram mania

The herein picture shown Maxim MAX1555 Battery Charger Pin configurations diagram in thin SOT23 package. This device used to be applied on PDAs, Wireless Applications, Cell Phones, and Digital Cameras as it can charge from USB or AC adapter. The Pin Descriptions of MAX1555 are: (1) USB – USB port charger supply , (2) GND […]

RS-232/RS-485 Protocol Translators

Uncategorized | By: Diagram mania

This is a protocol translator circuit. This circuit uses the MAX3162, it contains both  RS-485 and RS-232 transmitters  and receivers. This IC contains wide range of communication devices, that can convert bidirectionally between RS-485 and RS-232 signals. Here is the circuit : The upper circuit is the translator for point to point application, and the […]

Single Input to Differential Input Adapter for Digital Voltmeter

Tester Circuits | By: Diagram mania

I some cases, a differential input is needed for voltage measurement. Using the only one operational amplifier, you can build an adapter to provide a floating input for your ground-referenced  voltmeter. Use 1% tolerance metal film resistor for R1 and R2.  Adjust VR1 to give zero voltage output when the input probe is shorted.  You […]

Single Input to Differential Input Adapter for Digital Voltmeter

Tester Circuits | By: Diagram mania

I some cases, a differential input is needed for voltage measurement. Using the only one operational amplifier, you can build an adapter to provide a floating input for your ground-referenced  voltmeter. Use 1% tolerance metal film resistor for R1 and R2.  Adjust VR1 to give zero voltage output when the input probe is shorted.  You […]

Multi Output Power Supply

Power Supply circuits | By: Diagram mania

This transformer-rectifier-filter arrangement gives you multiple output voltages with a single transformer. This AC-DC converter can be your solution is you need two level of symmetric power supply. Here is the schematic diagram of the circuit: U1 and -U1 uses a basic symmetric supply configuration, with a center-tapped transformer and full bridge rectifier for. U2 […]

Selectable Voltages 6V, 9V, and 12V Linear Voltage Regulator

Power Supply circuits | By: Diagram mania

  We can build a multiple voltage power supply 6, 9, and 12V  (AC-DC Adapter) with the circuit shown in the following schematic diagram.  Not only provide multiple voltage output with single voltage supply, this circuit add the benefit of regulating the voltage for better stability. The TIP31 transistor should be installed with proper heat-sink […]

13.8 Volt 20 A Transformerless Power Supply

Power Supply circuits | By: Diagram mania

Do you need high current power supply without heavy and expensive transformer″ Then, this circuit would be great choice for you. This 13.8 Volt 20 A regulated transformerless power supply. 20A transformer is very-very expensive, large in size and very heavy in weight. More explanation about this circuit, please visit this page