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Power Pulse Modulators
Power Pulse Modulator

Power Pulse Modulator

PWM-OC10A
This is a compact multifunction variable pulse generator. It is designed to fit a wide range of applications and be fully adjustable so that it can be used for many different tasks. This is designed to be low cost so that multiple units can be used to complete a variety of tasks, or so that the same board can be used in numerous different projects or experiments where several different devices might normally be needed. The modules can be linked together in a master/slave setup, and the pulse width can be adjusted by an external analogue source.

Select an option below for high powered versions

Features and Specifications
NB: Figures may vary under different loading conditions and environments.
Input 9 to 12V 10A (120W)
Power Output - 9 to 12V DC Square wave 10A
Continuous/average output current up to 2.5A
Short pulse currents up to 30A
Open collector output allows for use of separate voltage source for pulses.
Independent frequency and pulse width / duty cycle controls.
Frequency adjustable between 1Hz and 100kHz (Includes 2 capacitors for different frequency ranges)
Pulse width fully adjustable between 0% and 100%
EMI Transient / Motor Load indicator
ESD and Transient suppression included

Need a different spec? Customization available from £14.99 or check below for standard customizations.

Example Applications

Pulse Width modulation (PWM) Motor Speed Control
Pulse Width Modulation (PWM) is used to accurately control the speed of DC motors. The pulse frequency can be adjusted to match your motor for performance or reducing noise. The speed of the motor can be adjusted using the preset on the board, or it can be attached another variable voltage source such as the analogue output from a micro controllers or similar device.
Hydrogen Production (Electrolysis)
Simple control over reaction rates with PWM control. It
can switch large currents for direct connection to
electrodes or use of transformers with widely adjustable
frequency for impedance matching and resonating
systems.
Dimming or Flashing of LED's and Light bulbs
This module can be used to smoothly dim lights or make them flash at regular intervals. The brightness is adjusted by a pulse width modulated signal which can be set to and inaudible frequency.
Tone Generator for small or large speakers
This circuit generates an adjustable square wave signal that is powerful enough to drive anything from piezoelectric sounders to large bass speakers. The frequency range can be adjusted between sub bass and ultrasonic levels.
Transformer Driver
Works with inductive loads like transformers for inverter projects or high voltage power supply's. 12V operation allows it to drive autotransformers, induction or ignition coils.

Download the PWM-OC10A Instruction Manual
SALE: was £39.99 Save £5
Stock Level: 11
Select an option from below to display information above
Power Pulse Modulator - £34.99
Power Pulse Modulator 30A - £49.99
Item Price: £34.99



High Power Pulse Modulators
High Power Pulse Modulator

High Power Pulse Modulator

PWM-OC70A
This is a multifunction variable pulse generator. It is designed to fit a wide range of applications and be fully adjustable so that it can be used for many different tasks.

These high power pulse width modulation circuits offer a highly compact and efficient way of controlling power delivery to any suitable load.

These were designed with the application of hydrogen generation in mind and are ideal for controlling power to loads like our High Power HHO Electrodes

The modules can also be linked together in a master/slave setup, and the pulse width can be adjusted by an external analogue source. They retain many of the great features of the standard PWM-OC10A.

Features and Specifications:
NB: Figures may vary with varying operating conditions.

Adjustable square wave output
Supply Voltage - 12V to 15V
Supply Current - up to 1.5A (no load)
Dual power output
Output A - 50A Continuous**, 300A peak (1ms Tc 25 C)
Output B - 1A continuous, 10A peak (1ms Tc 25 C)
Switching Voltage A – 0V - 300V
Switching Voltage B – 0V - 50V
Frequency range - < 1Hz to 300kHz*
Duty cycle (pulse width) - 0% to 100%
Enclosed in Aluminium box for RF shielding and stability.

For more details and information;
Download the PWM-OC70A Instruction Manual

This device is great for driving large electrolysis cells (aka hydrogen fuel cell) and other power hungry loads.
Stock Level: -3
Select an option from below to display information above
High Power Pulse Modulator - £139.99
Super High Power Pulse Modulator - £189.99
Item Price: £139.99



Resonant Signal Generator
Resonant Signal Generator

Resonant Signal Generator

SG-LCR2M
This tiny module provides a compact and low cost variable square wave signal source.

The device has an output for direct use of the signal and also includes a second output which can be used for matching the resonant frequency of LC (inductor-capacitor) circuits such as Tesla Coils.

Input: 9V
Output: Adjustable frequency square wave 270 Hz – 1.8 MHz
Frequency range depends upon fitted timing capacitor. You can extend the range using your own capacitors.
Squareness of wave reduces with increasing frequency. At top frequency range, output is sine wave.

Click here to download the datasheet

NOTE: This product is discontinued. We will get no more once the stock is exhausted.
Stock Level: 4
Item Price: £12.99



Remote Control for PWM-OC
Remote Control for PWM-OC

Remote Control for PWM-OC

POT-OC
External remote control and LED indicator for operating the duty setting of our PWM-OC range of circuits.
Supplied on a 2m length of quality shielded cable. Contact us if you require a different length.
Stock Level: 4
Item Price: £6.99



AM Adapter
AM Adapter

AM Adapter

AM-Adaptor
This is a tiny adapter which can be used to convert a varying voltage into a varying resistance. It is designed for use with our Power Pulse Modulators so that they can be Amplitude Modulated.
The amplitude can be modulated digitally (on-off) for signal gating or it can be modulated with an analogue signal such as audio. It is even sensitive enough to respond to voltage induced by human touch.
Click here to download the datasheet
Stock Level: 6
Item Price: £1.99



Differential Driver
Differential Driver

Differential Driver

MBST-DIF1A
This is a tiny upgrade module for our PWM-OC10A units which allows them to work more efficiently at higher frequencies and to give a more square output.
The device can be fitted so that it boosts the signal or it can also be used to boost and invert the signal so that the output phase is inverted.

Click here for the MBST-DIF1A Datasheet
Stock Level: 7
Item Price: £7.99


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